# things inside of C comments get copied to the manpage
# things starting with # are ignored

/* .\" -*- nroff -*-
.TH IMAPD.CONF 5 "Project Cyrus" CMU
.\"
.\" Copyright (c) 1994-2008 Carnegie Mellon University.  All rights reserved.
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 *
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.\"    acknowledgment:
.\"    "This product includes software developed by Computing Services
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.\"
.\" CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
.\" THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
.\" AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
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.\" $Id: imapoptions,v 1.73.2.1 2010/01/06 17:29:57 murch Exp $

.SH NAME
imapd.conf \- IMAP configuration file
.SH DESCRIPTION
\fB/usr/pkg/etc/imapd.conf\fR 
is the configuration file for the Cyrus IMAP server.  It defines
local parameters for IMAP. 
.PP
Each line of the \fB/usr/pkg/etc/imapd.conf\fR file has the form
.IP
\fIoption\fR: \fIvalue\fR
.PP
where \fIoption\fR is the name of the configuration option being set
and \fIvalue\fR is the value that the configuration option is being
set to.
.PP
Although there is no limit to the length of a line, a ``\\''
(backslash) character may be used as the last character on a line to
force it to continue on the next one.  No additional whitespace is
inserted before or after the ``\\''.  Note that a line that is split
using ``\\'' character(s) is still considered a single line.
For example
.IP
\fIoption\fR:\\
.br
.in +1
\fIvalue\fR1 \fIvalue\fR2 \\
.br
.in +1
\fIvalue\fR3
.PP
is equivalent to
.IP
\fIoption\fR: \fIvalue\fR1 \fIvalue\fR2   \fIvalue\fR3
.PP
Blank lines and lines beginning with ``#'' are ignored.
.PP
For boolean and enumerated options, the values ``yes'', ``on'', ``t'',
``true'' and ``1'' turn the option on, the values ``no'', ``off'',
``f'', ``false'' and ``0'' turn the option off.
.SH FIELD DESCRIPTIONS
.PP
The sections below detail options that can be placed in the
\fB/usr/pkg/etc/imapd.conf\fR file, and show each option's default value.
Some options have no default value, these are listed with
``<no default>''.  Some options default to the empty string, these
are listed with ``<none>''.
*/

# OPTIONS

{ "admins", "", STRING }
/* The list of userids with administrative rights.  Separate each userid
   with a space.  Sites using Kerberos authentication may use
   separate "admin" instances.
.PP
   Note that accounts used by users should not be administrators.
   Administrative accounts should not receive mail.  That is, if user
   "jbRo" is a user reading mail, he should not also be in the admins line.
   Some problems may occur otherwise, most notably the ability of
   administrators to create top-level mailboxes visible to users,
   but not writable by users. */

{ "afspts_localrealms", NULL, STRING }
/* The list of realms which are to be treated as local, and thus stripped
   during identifier canonicalization (for the AFSPTS ptloader module).
   This is different from loginrealms in that it occurs later in the
   authorization process (as the user id is canonified for PTS lookup) */

{ "afspts_mycell", NULL, STRING }
/* Cell to use for AFS PTS lookups.  Defaults to the local cell. */

{ "allowallsubscribe", 0, SWITCH }
/* Allow subscription to nonexistent mailboxes.  This option is
   typically used on backend servers in a Murder so that users can
   subscribe to mailboxes that don't reside on their "home" server.
   This option can also be used as a workaround for IMAP clients which
   don't play well with nonexistent or unselectable mailboxes (e.g.,
   Microsoft Outlook). */

{ "allowanonymouslogin", 0, SWITCH }
/* Permit logins by the user "anonymous" using any password.  Also
   allows use of the SASL ANONYMOUS mechanism. */

{ "allowapop", 1, SWITCH }
/* Allow use of the POP3 APOP authentication command.
.PP
  Note that this command requires that SASL is compiled with APOP
  support, that the plaintext passwords are available in a SASL auxprop
  backend (e.g., sasldb), and that the system can provide enough entropy
  (e.g., from /dev/urandom) to create a challenge in the banner. */

{ "allownewnews", 0, SWITCH }
/* Allow use of the NNTP NEWNEWS command.
.PP
  Note that this is a very expensive command and should only be
  enabled when absolutely necessary. */

{ "allowplaintext", 0, SWITCH }
/* Allow the use of cleartext passwords on the wire. */
   
{ "allowusermoves", 0, SWITCH }
/* Allow moving user accounts (with associated meta-data) via RENAME
   or XFER.
.PP
  Note that measures should be taken to make sure that the user being
  moved is not logged in, and cannot login during the move.  Failure
  to do so may result in the user's meta-data (seen state,
  subscriptions, etc) being corrupted or out of date. */
   
{ "altnamespace", 0, SWITCH }
/* Use the alternate IMAP namespace, where personal folders reside at the
   same level in the hierarchy as INBOX.
.PP
   This option ONLY applies where interaction takes place with the
   client/user.  Currently this is limited to the IMAP protocol (imapd)
   and Sieve scripts (lmtpd).  This option does NOT apply to admin tools
   such as cyradm (admins ONLY), reconstruct, quota, etc., NOR does it
   affect LMTP delivery of messages directly to mailboxes via
   plus-addressing. */

{ "annotation_db", "skiplist", STRINGLIST("berkeley", "berkeley-hash", "skiplist")}
/* The cyrusdb backend to use for mailbox annotations. */

{ "anyoneuseracl", 1, SWITCH }
/* Should non-admin users be allowed to set ACLs for the 'anyone'
   user on their mailboxes?  In a large organization this can cause
   support problems, but it's enabled by default. */

{ "annotation_definitions", NULL, STRING }
/* File containing external (third-party) annotation definitions.
.PP
Each line of the file specifies the properties of an annotation and
has the following form:
.IP
\fIname\fR, \fIscope\fR, \fIattrib-type\fR, \fIproxy-type\fR,
\fIattrib-names\fR, \fIacl\fR
.IP \fIname\fR 5
is the hierarchical name as in the draft standard, typically of the
form /vendor/acme/blurdybloop
.IP \fIscope\fR 5
specifies whether the annotation is for the \fBserver\fR or a
\fBmailbox\fR
.IP \fIattrib-type\fR 5
specifies the attribute data type which is one of: \fBstring\fR,
\fBboolean\fR, \fBint\fR, \fBuint\fR, or \fBcontent-type\fR
.IP \fIproxy-type\fR 5
specifies whether this attribute is for the \fBbackend\fR or
\fBproxy\fR servers or both (\fBproxy_and_backend\fR) 
.IP \fIattrib-names\fR 5
is the space-separated list of available attributes for the
annotation. Possible attribute names are (where the suffixless \fBfoo\fR
permits both \fBfoo.priv\fR and \fBfoo.shared\fR): \fBalue\fR,
\fBvalue.shared\fR, \fBvalue.priv\fR, \fBsize\fR, \fBsize.shared\fR,
\fBsize.priv\fR, \fBmodifiedsince\fR, \fBmodifiedsince.shared\fR,
\fBmodifiedsince.priv\fR, \fBcontent-type\fR,
\fBcontent-type.shared\fR, \fBcontent-type.priv\fR
.IP \fIacl\fR 5
is the extra ACL requirements for setting annotations. This is the
standard IMAP ACL permission bit string format. Particularly useful
is the \fBa\fR right to require admin privileges. Note that some ACL
requirements (read and write on the mailbox) are hard-wired in the
server
.PP
Blank lines and lines beginning with ``#'' are ignored.
*/

{ "auth_mech", "unix", STRINGLIST("unix", "pts", "krb", "krb5")}
/* The authorization mechanism to use. */

{ "autocreatequota", 0, INT }
/* If nonzero, normal users may create their own IMAP accounts by
   creating the mailbox INBOX.  The user's quota is set to the value
   if it is positive, otherwise the user has unlimited quota. */

{ "berkeley_cachesize", 512, INT }
/* Size (in kilobytes) of the shared memory buffer pool (cache) used
   by the berkeley environment.  The minimum allowed value is 20.  The
   maximum allowed value is 4194303 (4GB). */

{ "berkeley_locks_max", 50000, INT }
/* Maximum number of locks to be held or requested in the berkeley
   environment. */

{ "berkeley_txns_max", 100, INT }
/* Maximum number of transactions to be supported in the berkeley
   environment. */

{ "client_timeout", 10, INT }
/* Number of seconds to wait before returning a timeout failure when
   performing a client connection (e.g., in a murder environment) */

{ "configdirectory", NULL, STRING }
/* The pathname of the IMAP configuration directory.  This field is
   required. */

{ "debug_command", NULL, STRING }
/* Debug command to be used by processes started with -D option.  The string
   is a C format string that gets 3 options: the first is the name of the
   executable (without path).  The second is the pid (integer) and the third
   is the service ID.  Example: /usr/local/bin/gdb /usr/cyrus/bin/%s %d */

{ "defaultacl", "anyone lrs", STRING }
/* The Access Control List (ACL) placed on a newly-created (non-user)
   mailbox that does not have a parent mailbox. */

{ "defaultdomain", NULL, STRING }
/* The default domain for virtual domain support */

{ "defaultpartition", NULL, STRING }
/* The partition name used by default for new mailboxes.  If not
   specified, the partition with the most free space will be used for new
   mailboxes. */

{ "defaultserver", NULL, STRING }
/* The backend server name used by default for new mailboxes.  If not
   specified, the server with the most free space will be used for new
   mailboxes. */

{ "deletedprefix", "DELETED", STRING }
/* If "delete_mode" set to be "delayed", the prefix for the deleted
   mailboxes hierarchy.  The hierarchy delimiter will be automatically
   appended. */

{ "delete_mode", "immediate", ENUM("immediate", "delayed") }
/*  The manner in which mailboxes are deleted. "Immediate" mode is the
    default behavior in which mailboxes are removed immediately.  In
    "delayed" mode, mailboxes are renamed to a special hiearchy defined
    by the "deletedprefix" option to be removed later by cyr_expire.
*/

{ "deleteright", "c", STRING }
/* Deprecated - only used for backwards compatibility with existing
   installations.  Lists the old RFC 2086 right which was used to
   grant the user the ability to delete a mailbox.  If a user has this
   right, they will automatically be given the new 'x' right. */

{ "disconnect_on_vanished_mailbox", 0, SWITCH }
/* If enabled, IMAP/POP3/NNTP clients will be disconnected by the
   server if the currently selected mailbox is (re)moved by another
   session.  Otherwise, the missing mailbox is treated as empty while
   in use by the client.*/

{ "duplicate_db", "berkeley-nosync", STRINGLIST("berkeley", "berkeley-nosync", "berkeley-hash", "berkeley-hash-nosync", "skiplist", "sql")}
/* The cyrusdb backend to use for the duplicate delivery suppression
   and sieve. */

{ "duplicatesuppression", 1, SWITCH }
/* If enabled, lmtpd will suppress delivery of a message to a mailbox if
   a message with the same message-id (or resent-message-id) is recorded
   as having already been delivered to the mailbox.  Records the mailbox
   and message-id/resent-message-id of all successful deliveries. */

{ "expunge_mode", "immediate", ENUM("immediate", "delayed") }
/* The mode in which messages (and their corresponding cache entries)
   are expunged.  "Immediate" mode is the default behavior in which the
   message files and cache entries are purged at the time of the
   EXPUNGE.  In "delayed" mode, the messages are removed from the
   mailbox index at the time of the EXPUNGE (hiding them from the
   client), but the message files and cache entries are left behind,
   to be purged at a later time by "cyr_expire".  This reduces the
   amount of I/O that takes place at the time of EXPUNGE and should
   result in greater responsiveness for the client, especially when
   expunging a large number of messages. */

{ "flushseenstate", 0, SWITCH }
/* If enabled, changes to the seen state will be flushed to disk
   immediately, otherwise changes will be cached and flushed when the
   mailbox is closed.  This option may be used to fix the problem of
   previously read messages being marked as unread in Microsoft
   Outlook, at the expense of a loss of performance/scalability. */

{ "foolstupidclients", 0, SWITCH }
/* If enabled, only list the personal namespace when a LIST "*" is performed
   (it changes the request to a LIST "INBOX*"). */

{ "force_sasl_client_mech", NULL, STRING }
/* Force preference of a given SASL mechanism for client side operations
   (e.g., murder environments).  This is separate from (and overridden by)
   the ability to use the <host shortname>_mechs option to set preferred
   mechanisms for a specific host */

{ "fulldirhash", 0, SWITCH }
/* If enabled, uses an improved directory hashing scheme which hashes
   on the entire username instead of using just the first letter as
   the hash.  This changes hash algorithm used for quota and user
   directories and if \fIhashimapspool\fR is enabled, the entire mail
   spool.
.PP
   Note that this option CANNOT be changed on a live system.  The
   server must be quiesced and then the directories moved with the
   \fBrehash\fR utility. */

{ "guid_mode", "off", ENUM("off", "sha1")}
/* The method used to calculate Globally Unique IDentifiers of
   messages (used by the replication engine).  The "sha1" method
   calculates a SHA1 hash of the entire message */

{ "hashimapspool", 0, SWITCH }
/* If enabled, the partitions will also be hashed, in addition to the
   hashing done on configuration directories.  This is recommended if
   one partition has a very bushy mailbox tree. */

# Commented out - there's no such thing as "hostname_mechs", but we need
# this for the man page
# { "hostname_mechs", NULL, STRING }
/* Force a particular list of SASL mechanisms to be used when authenticating
   to the backend server hostname (where hostname is the short hostname of
   the server in question). If it is not specified it will query the server
   for available mechanisms and pick one to use. - Cyrus Murder */

# Commented out - there's no such thing as "hostname_password", but we need
# this for the man page
# { "hostname_password", NULL, STRING }
/* The password to use for authentication to the backend server hostname
   (where hostname is the short hostname of the server) - Cyrus Murder */

{ "idlesocket", "{configdirectory}/socket/idle", STRING }
/* Unix domain socket that idled listens on. */

{ "ignorereference", 0, SWITCH }
/* For backwards compatibility with Cyrus 1.5.10 and earlier -- ignore
  the reference argument in LIST or LSUB commands. */

{ "imapidlepoll", 60, INT }
/* The interval (in seconds) for polling for mailbox changes and
   ALERTs while running the IDLE command.  This option is used when
   idled is not enabled or cannot be contacted.  The minimum value is
   1.  A value of 0 will disable IDLE. */

{ "imapidresponse", 1, SWITCH }
/* If enabled, the server responds to an ID command with a parameter 
   list containing: version, vendor, support-url, os, os-version,
   command, arguments, environment.  Otherwise the server returns NIL. */

{ "imapmagicplus", 0, SWITCH }
/* Only list a restricted set of mailboxes via IMAP by using
   userid+namespace syntax as the authentication/authorization id.
   Using userid+ (with an empty namespace) will list only subscribed
   mailboxes. */ 

{ "implicit_owner_rights", "lkxa", STRING }
/* The implicit Access Control List (ACL) for the owner of a mailbox. */

# Commented out - there's no such thing as "@include", but we need
# this for the man page
# { "@include", NULL, STRING }
/* Directive which includes the specified file as part of the
   configuration.  If the path to the file is not absolute, CYRUS_PATH
   is prepended. */

{ "improved_mboxlist_sort", 0, SWITCH }
/* If enabled, a special comparator will be used which will correctly
   sort mailbox names that contain characters such as ' ' and '-'.
.PP
   Note that this option SHOULD NOT be changed on a live system.
   The mailboxes database should be dumped before the option is changed,
   removed, and then undumped after changing the option. */

{ "ldap_authz", NULL, STRING }
/* SASL authorization ID for the LDAP server */

{ "ldap_base", "", STRING }
/* Contains the LDAP base dn for the LDAP ptloader module */

{ "ldap_bind_dn", NULL, STRING }
/* Bind DN for the connection to the LDAP server (simple bind).
   Do not use for anonymous simple binds */

{ "ldap_deref", "never", STRINGLIST("search", "find", "always", "never") }
/* Specify how aliases dereferencing is handled during search. */

{ "ldap_filter", "(uid=%u)", STRING }
/* Specify a filter that searches user identifiers.  The following tokens can be
   used in the filter string:

   %%   = %
   %u   = user
   %U   = user portion of %u (%U = test when %u = test@domain.tld)
   %d   = domain portion of %u if available (%d = domain.tld when %u =
          %test@domain.tld), otherwise same as %r
   %D   = user dn.  (use when ldap_member_method: filter)
   %1-9 = domain tokens (%1 = tld, %2 = domain when %d = domain.tld)

   ldap_filter is not used when ldap_sasl is enabled. */

{ "ldap_group_base", "", STRING }
/* LDAP base dn for ldap_group_filter. */

{ "ldap_group_filter", "(cn=%u)", STRING }
/* Specify a filter that searches for group identifiers.
   See ldap_filter for more options. */ 

{ "ldap_group_scope", "sub", STRINGLIST("sub", "one", "base") }
/* Specify search scope for ldap_group_filter. */

{ "ldap_id", NULL, STRING }
/* SASL authentication ID for the LDAP server */

{ "ldap_mech", NULL, STRING }
/* SASL mechanism for LDAP authentication */

{ "ldap_member_attribute", NULL, STRING }
/* See ldap_member_method. */

{ "ldap_member_base", "", STRING }
/* LDAP base dn for ldap_member_filter. */

{ "ldap_member_filter", "(member=%D)", STRING }
/* Specify a filter for "ldap_member_method: filter".  
   See ldap_filter for more options. */ 

{ "ldap_member_method", "attribute", STRINGLIST("attribute", "filter") }
/* Specify a group method.  The "attribute" method retrieves groups from 
   a multi-valued attribute specified in ldap_member_attribute.  

   The "filter" method uses a filter, specified by ldap_member_filter, to find
   groups; ldap_member_attribute is a single-value attribute group name. */

{ "ldap_member_scope", "sub", STRINGLIST("sub", "one", "base") }
/* Specify search scope for ldap_member_filter. */

{ "ldap_password", NULL, STRING }
/* Password for the connection to the LDAP server (SASL and simple bind).  
   Do not use for anonymous simple binds */

{ "ldap_realm", NULL, STRING }
/* SASL realm for LDAP authentication */

{ "ldap_referrals", 0, SWITCH }
/* Specify whether or not the client should follow referrals. */

{ "ldap_restart", 1, SWITCH }
/* Specify whether or not LDAP I/O operations are automatically restarted
   if they abort prematurely. */

{ "ldap_sasl", 1, SWITCH }
/* Use SASL for LDAP binds in the LDAP PTS module. */

{ "ldap_sasl_authc", NULL, STRING }
/* Deprecated.  Use ldap_id */

{ "ldap_sasl_authz", NULL, STRING }
/* Deprecated.  Use ldap_authz */

{ "ldap_sasl_mech", NULL, STRING }
/* Deprecated.  Use ldap_mech */

{ "ldap_sasl_password", NULL, STRING }
/* Deprecated.  User ldap_password */

{ "ldap_sasl_realm", NULL, STRING }
/* Deprecated.  Use ldap_realm */

{ "ldap_scope", "sub", STRINGLIST("sub", "one", "base") }
/* Specify search scope. */

{ "ldap_servers", "ldap://localhost/", STRING }
/* Deprecated.  Use ldap_uri */

{ "ldap_size_limit", 1, INT }
/* Specify a number of entries for a search request to return. */

{ "ldap_start_tls", 0, SWITCH }
/* Use StartTLS extended operation.  Do not use ldaps: ldap_uri when
   this option is enabled. */

{ "ldap_time_limit", 5, INT }
/* Specify a number of seconds for a search request to complete. */

{ "ldap_timeout", 5, INT }
/* Specify a number of seconds a search can take before timing out. */

{ "ldap_tls_cacert_dir", NULL, STRING }
/* Path to directory with CA (Certificate Authority) certificates. */

{ "ldap_tls_cacert_file", NULL, STRING }
/* File containing CA (Certificate Authority) certificate(s). */

{ "ldap_tls_cert", NULL, STRING }
/* File containing the client certificate. */

{ "ldap_tls_check_peer", 0, SWITCH }
/* Require and verify server certificate.  If this option is yes,
   you must specify ldap_tls_cacert_file or ldap_tls_cacert_dir. */

{ "ldap_tls_ciphers", NULL, STRING }
/* List of SSL/TLS ciphers to allow.  The format of the string is
   described in ciphers(1). */

{ "ldap_tls_key", NULL, STRING }
/* File containing the private client key. */

{ "ldap_uri", NULL, STRING }
/* Contains a list of the URLs of all the LDAP servers when using the
   LDAP PTS module. */

{ "ldap_version", 3, INT }
/* Specify the LDAP protocol version.  If ldap_start_tls and/or
   ldap_use_sasl are enabled, ldap_version will be automatically
   set to 3. */

{ "lmtp_downcase_rcpt", 0, SWITCH }
/* If enabled, lmtpd will convert the recipient addresses to lowercase
   (up to a '+' character, if present). */

{ "lmtp_fuzzy_mailbox_match", 0, SWITCH }
/* If enabled, and the mailbox specified in the detail part of the
   recipient (everything after the '+') does not exist, lmtpd will try
   to find the closest match (ignoring case, ignoring whitespace,
   falling back to parent) to the specified mailbox name. */

{ "lmtp_over_quota_perm_failure", 0, SWITCH }
/* If enabled, lmtpd returns a permanent failure code when a user's
   mailbox is over quota.  By default, the failure is temporary,
   causing the MTA to queue the message and retry later. */

{ "lmtp_strict_quota", 0, SWITCH }
/* If enabled, lmtpd returns a failure code when the incoming message
   will cause the user's mailbox to exceed its quota.  By default, the
   failure won't occur until the mailbox is already over quota. */

{ "lmtpsocket", "{configdirectory}/socket/lmtp", STRING }
/* Unix domain socket that lmtpd listens on, used by deliver(8). This should
   match the path specified in cyrus.conf(5). */

# xxx how does this tie into virtual domains?
{ "loginrealms", "", STRING }
/* The list of remote realms whose users may authenticate using cross-realm
   authentication identifiers.  Separate each realm name by a space.  (A
   cross-realm identity is considered any identity returned by SASL
   with an "@" in it.). */

{ "loginuseacl", 0, SWITCH }
/* If enabled, any authentication identity which has \fBa\fR rights on a
   user's INBOX may log in as that user. */

{ "logtimestamps", 0, SWITCH }
/* Include notations in the protocol telemetry logs indicating the number of
   seconds since the last command or response. */

{ "mailbox_default_options", 0, INT }
/* Default "options" field for the mailbox on create.  You'll want to know
   what you're doing before setting this, but it can apply some default
   annotations like condstore or duplicate supression */

{ "mailnotifier", NULL, STRING }
/* Notifyd(8) method to use for "MAIL" notifications.  If not set, "MAIL"
   notifications are disabled. */

{ "maxheaderlines", 1000, INT }
/* Maximum number of lines of header that will be processed into cache
   records.  Default 1000.  If set to zero, it is unlimited.
   If a message hits the limit, an error will be logged and the rest of
   the lines in the header will be skipped.  This is to avoid malformed
   messages causing giant cache records */

{ "maxmessagesize", 0, INT }
/* Maximum incoming LMTP message size.  If non-zero, lmtpd will reject
   messages larger than \fImaxmessagesize\fR bytes.  If set to 0, this
   will allow messages of any size (the default). */

{ "maxquoted", 131072, INT }
/* Maximum size of a single quoted string for the parser.  Default 128k */

{ "maxword", 131072, INT }
/* Maximum size of a single word for the parser.  Default 128k */

{ "mboxkey_db", "skiplist", STRINGLIST("berkeley", "skiplist") }
/* The cyrusdb backend to use for mailbox keys. */

{ "mboxlist_db", "skiplist", STRINGLIST("flat", "berkeley", "berkeley-hash", "skiplist")}
/* The cyrusdb backend to use for the mailbox list. */

{ "metapartition_files", "", BITFIELD("header", "index", "cache", "expunge", "squat") }
/* Space-separated list of metadata files to be stored on a
   \fImetapartition\fR rather than in the mailbox directory on a spool
   partition. */

# Commented out - there's no such thing as "metapartition-name",
# but we need this for the man page
# { "metapartition-name", NULL, STRING }
/* The pathname of the metadata partition \fIname\fR, corresponding to
   spool partition \fBpartition-name\fR.  For any mailbox residing in
   a directory on \fBpartition-name\fR, the metadata files listed in
   \fImetapartition_files\fR will be stored in a corresponding directory on
   \fBmetapartition-name\fR.   Note that not every
   \fBpartition-name\fR option is required to have a corresponding
   \fBmetapartition-name\fR option, so that you can selectively choose
   which spool partitions will have separate metadata partitions. */

{ "mupdate_authname", NULL, STRING }
/* The SASL username (Authentication Name) to use when authenticating to the
   mupdate server (if needed). */

{ "mupdate_config", "standard", ENUM("standard", "unified", "replicated") }
/* The configuration of the mupdate servers in the Cyrus Murder.
   The "standard" config is one in which there are discreet frontend
   (proxy) and backend servers.  The "unified" config is one in which
   a server can be both a frontend and backend.  The "replicated"
   config is one in which multiple backend servers all share the same
   mailspool, but each have their own "replicated" copy of
   mailboxes.db. */

{ "md5_dir", NULL, STRING }
/* Top level directory for MD5 store manipulated by make_md5. File
   structure within this directory is one file for each user on the system,
   hashed on the first letter of the userid (e.g., /var/imap/md5/d/dpc22). */

{ "md5_user_map", NULL, STRING }
/* Map file (cdb) to allow partial make_md5 runs. Maps username to UID */

{ "munge8bit", 1, SWITCH }
/* If enabled, lmtpd munges messages with 8-bit characters in the
   headers.  The 8-bit characters are changed to `X'.  If
   \fBreject8bit\fR is enabled, setting \fBmunge8bit\fR has no effect.
   (A proper solution to non-ASCII characters in headers is offered by
   RFC 2047 and its predecessors.) */ 

# xxx badly worded
{ "mupdate_connections_max", 128, INT }
/* The max number of connections that a mupdate process will allow, this
   is related to the number of file descriptors in the mupdate process.
   Beyond this number connections will be immediately issued a BYE response. */

{ "mupdate_password", NULL, STRING }
/* The SASL password (if needed) to use when authenticating to the
   mupdate server. */

{ "mupdate_port", 3905, INT }
/* The port of the mupdate server for the Cyrus Murder */

{ "mupdate_realm", NULL, STRING }
/* The SASL realm (if needed) to use when authenticating to the mupdate
   server. */

{ "mupdate_retry_delay", 20, INT }
/* The base time to wait between connection retries to the mupdate server. */

{ "mupdate_server", NULL, STRING }
/* The mupdate server for the Cyrus Murder */

{ "mupdate_username", "", STRING }
/* The SASL username (Authorization Name) to use when authenticating to
   the mupdate server */

{ "mupdate_workers_max", 50, INT }
/* The maximum number of mupdate worker threads (overall) */

{ "mupdate_workers_maxspare", 10, INT }
/* The maximum number of idle mupdate worker threads */

{ "mupdate_workers_minspare", 2, INT }
/* The minimum number of idle mupdate worker threads */

{ "mupdate_workers_start", 5, INT }
/* The number of mupdate worker threads to start */

{ "netscapeurl", NULL, STRING }
/* If enabled at compile time, this specifies a URL to reply when
   Netscape asks the server where the mail administration HTTP server
   is.  Administrators should set this to a local resource. */

{ "newsmaster", "news", STRING }
/* Userid that is used for checking access controls when executing
   Usenet control messages.  For instance, to allow articles to be
   automatically deleted by cancel messages, give the "news" user
   the 'd' right on the desired mailboxes.  To allow newsgroups to be 
   automatically created, deleted and renamed by the corresponding
   control messages, give the "news" user the 'c' right on the desired
   mailbox hierarchies. */

{ "newspeer", NULL, STRING }
/* A list of whitespace-separated news server specifications to which
   articles should be fed.  Each server specification is a string of
   the form [user[:pass]@]host[:port][/wildmat] where 'host' is the fully
   qualified hostname of the server, 'port' is the port on which the
   server is listening, 'user' and 'pass' are the authentication
   credentials and 'wildmat' is a pattern that specifies which groups
   should be fed.  If no 'port' is specified, port 119 is used.  If
   no 'wildmat' is specified, all groups are fed.  If 'user' is specified
   (even if empty), then the NNTP POST command will be used to feed
   the article to the server, otherwise the IHAVE command will be
   used.
.br
.sp
   A '@' may be used in place of '!' in the wildmat to prevent feeding
   articles cross-posted to the given group, otherwise cross-posted
   articles are fed if any part of the wildmat matches.  For example,
   the string "peer.example.com:*,!control.*,@local.*" would feed all
   groups except control messages and local groups to
   peer.example.com.  In the case of cross-posting to local groups,
   these articles would not be fed. */

{ "newspostuser", NULL, STRING }
/* Userid used to deliver usenet articles to newsgroup folders
   (usually via lmtp2nntp).  For example, if set to "post", email sent
   to "post+comp.mail.imap" would be delivered to the "comp.mail.imap"
   folder.
.br
.sp
   When set, the Cyrus NNTP server will add a \fITo:\fR header to each
   incoming usenet article.  This \fITo:\fR header will contain email
   delivery addresses corresponding to each newsgroup in the
   \fINewsgroups:\fR header.  By default, a \fITo:\fR header is not
   added to usenet articles. */

{ "newsprefix", NULL, STRING }
/* Prefix to be prepended to newsgroup names to make the corresponding
   IMAP mailbox names. */

{ "nntptimeout", 3, INT }
/* Set the length of the NNTP server's inactivity autologout timer,    
   in minutes.  The minimum value is 3, the default. */

{ "notifysocket", "{configdirectory}/socket/notify", STRING }
/* Unix domain socket that the mail notification daemon listens on. */

# Commented out - there's no such thing as "partition-name", but we need
# this for the man page
# { "partition-name", NULL, STRING }
/* The pathname of the partition \fIname\fR.  At least one partition
   pathname MUST be specified.  If the \fBdefaultpartition\fR option is
   used, then its pathname MUST be specified.  For example, if the
   value of the \fBdefaultpartion\fR option is \fBdefault\fR, then the
   \fBpartition-default\fR field is required. */ 

{ "plaintextloginpause", 0, INT }
/* Number of seconds to pause after a successful plaintext login.  For
   systems that support strong authentication, this permits users to  
   perceive a cost of using plaintext passwords.  (This does not
   affect the use of PLAIN in SASL authentications.) */

{ "plaintextloginalert", NULL, STRING }
/* Message to send to client after a successful plaintext login. */

{ "popexpiretime", -1, INT }
/* The number of days advertised as being the minimum a message may be
   left on the POP server before it is deleted (via the CAPA command,
   defined in the POP3 Extension Mechanism, which some clients may
   support).  "NEVER", the default, may be specified with a negative
   number.  The Cyrus POP3 server never deletes mail, no matter what  
   the value of this parameter is.  However, if a site implements a 
   less liberal policy, it needs to change this parameter
   accordingly. */

{ "popminpoll", 0, INT }
/* Set the minimum amount of time the server forces users to wait
   between successive POP logins, in minutes. */ 

{ "popsubfolders", 0, SWITCH }
/* Allow access to subfolders of INBOX via POP3 by using
   userid+subfolder syntax as the authentication/authorization id. */

{ "poppollpadding", 1, INT }
/* Create a softer minimum poll restriction.  Allows \fIpoppollpadding\fR
   connections before the minpoll restriction is triggered.  Additionally,
   one padding entry is recovered every \fIpopminpoll\fR minutes.
   This allows for the occasional polling rate faster than popminpoll, 
   (i.e., for clients that require a send/receive to send mail) but still 
   enforces the rate long-term.  Default is 1 (disabled).
.br
.sp
   The easiest way to think of it is a queue of past connections, with one
   slot being filled for every connection, and one slot being cleared 
   every \fIpopminpoll\fR minutes. When the queue is full, the user
   will not be able to check mail again until a slot is cleared.  If the 
   user waits a sufficient amount of time, they will get back many or all
   of the slots. */

{ "poptimeout", 10, INT }
/* Set the length of the POP server's inactivity autologout timer,    
   in minutes.  The minimum value is 10, the default. */

{ "popuseacl", 0, SWITCH }
/* Enforce IMAP ACLs in the pop server.  Due to the nature of the POP3
   protocol, the only rights which are used by the pop server are 'r',
   't', and 's' for the owner of the mailbox.  The 'r' right allows the
   user to open the mailbox and list/retrieve messages.  The 't' right
   allows the user to delete messages.  The 's' right allows messages
   retrieved by the user to have the \\Seen flag set (only if
   \fIpopuseimapflags\fR is also enabled). */

{ "popuseimapflags", 0, SWITCH }
/* If enabled, the pop server will set and obey IMAP flags.  Messages
   having the \\Deleted flag are ignored as if they do not exist.
   Messages that are retrieved by the client will have the \\Seen flag
   set.  All messages will have the \\Recent flag unset. */

{ "postmaster", "postmaster", STRING }
/* Username that is used as the 'From' address in rejection MDNs produced
   by sieve. */
   
{ "postspec", NULL, STRING }

{ "postuser", "", STRING }
/* Userid used to deliver messages to shared folders.  For example, if
   set to "bb", email sent to "bb+shared.blah" would be delivered to
   the "shared.blah" folder.  By default, an email address of
   "+shared.blah" would be used. */ 

{ "proxy_authname", "proxy", STRING }
/* The authentication name to use when authenticating to a backend server
   in the Cyrus Murder. */

{ "proxy_compress", 0, SWITCH }
/* Try to enable protocol-specific compression when performing a client
   connection to a backend server in the Cyrus Murder.
.PP
  Note that this should only be necessary over slow network
  connections.  Also note that currently only IMAP and MUPDATE support
  compression. */

{ "proxy_password", NULL, STRING }
/* The default password to use when authenticating to a backend server
   in the Cyrus Murder.  May be overridden on a host-specific basis using
   the hostname_password option. */

{ "proxy_realm", NULL, STRING }
/* The authentication realm to use when authenticating to a backend server
   in the Cyrus Murder */

{ "proxyd_allow_status_referral", 0, SWITCH }
/* Set to true to allow proxyd to issue referrals to clients that support it
   when answering the STATUS command.  This is disabled by default since
   some clients issue many STATUS commands in a row, and do not cache the
   connections that these referrals would cause, thus resulting in a higher
   authentication load on the respective backend server. */

{ "proxyd_disable_mailbox_referrals", 0, SWITCH }
/* Set to true to disable the use of mailbox-referrals on the
   proxy servers. */

{ "proxyservers", NULL, STRING }
/* A list of users and groups that are allowed to proxy for other
   users, separated by spaces.  Any user listed in this will be
   allowed to login for any other user: use with caution. */ 

{ "pts_module", "afskrb", STRINGLIST("afskrb", "ldap") }
/* The PTS module to use. */

{ "ptloader_sock", NULL, STRING }
/* Unix domain socket that ptloader listens on.
   (defaults to configdir/ptclient/ptsock) */

{ "ptscache_db", "berkeley", STRINGLIST("berkeley", "berkeley-hash", "skiplist")}
/* The cyrusdb backend to use for the pts cache. */

{ "ptscache_timeout", 10800, INT }
/* The timeout (in seconds) for the PTS cache database when using the
   auth_krb_pts authorization method (default: 3 hours). */

{ "ptskrb5_convert524", 1, SWITCH }
/* When using the AFSKRB ptloader module with Kerberos 5 canonicalization,
   do the final 524 conversion to get a n AFS style name (using '.' instead
   of '/', and using short names */

{ "ptskrb5_strip_default_realm", 1, SWITCH }
/* When using the AFSKRB ptloader module with Kerberos 5 canonicalization,
   strip the default realm from the userid (this does not affect the stripping
   of realms specified by the afspts_localrealms option) */

{ "quota_db", "quotalegacy", STRINGLIST("flat", "berkeley", "berkeley-hash", "skiplist", "sql", "quotalegacy")}
/* The cyrusdb backend to use for quotas. */

{ "quotawarn", 90, INT }
/* The percent of quota utilization over which the server generates
   warnings. */

{ "quotawarnkb", 0, INT }
/* The maximum amount of free space (in kB) at which to give a quota
   warning (if this value is 0, or if the quota is smaller than this
   amount, than warnings are always given). */

{ "reject8bit", 0, SWITCH }
/* If enabled, lmtpd rejects messages with 8-bit characters in the
   headers. */

{ "rfc2046_strict", 0, SWITCH }
/* If enabled, imapd will be strict (per RFC 2046) when matching MIME
   boundary strings.  This means that boundaries containing other
   boundaries as substrings will be treated as identical.  Since
   enabling this option will break some messages created by Eudora 5.1
   (and earlier), it is recommended that it be left disabled unless
   there is good reason to do otherwise. */

{ "rfc3028_strict", 1, SWITCH }
/* If enabled, Sieve will be strict (per RFC 3028) with regards to
   which headers are allowed to be used in address and envelope tests.
   This means that only those headers which are defined to contain addresses
   will be allowed in address tests and only "to" and "from" will be
   allowed in envelope tests.  When disabled, ANY grammatically correct header
   will be allowed. */

# Commented out - used by libsasl
# { "sasl_auto_transition", 0, SWITCH }
/* If enabled, the SASL library will automatically create authentication
   secrets when given a plaintext password.  See the SASL documentation. */

{ "sasl_maximum_layer", 256, INT }
/* Maximum SSF (security strength factor) that the server will allow a
   client to negotiate. */

{ "sasl_minimum_layer", 0, INT }
/* The minimum SSF that the server will allow a client to negotiate.
   A value of 1 requires integrity protection; any higher value  
   requires some amount of encryption. */

# Commented out - used by libsasl
# { "sasl_option", 0, STRING }
/* Any SASL option can be set by preceding it with "sasl_".  This
   file overrides the SASL configuration file. */

# Commented out - used by libsasl
# { "sasl_pwcheck_method", NULL, STRING }
/* The mechanism used by the server to verify plaintext passwords. 
   Possible values include "auxprop", "saslauthd", and "pwcheck". */

{ "seenstate_db", "skiplist", STRINGLIST("flat", "berkeley", "berkeley-hash", "skiplist")}
/* The cyrusdb backend to use for the seen state. */

{ "sendmail", "/usr/lib/sendmail", STRING }
/* The pathname of the sendmail executable.  Sieve invokes sendmail
   for sending rejections, redirects and vacation responses. */

{ "serverlist", NULL, STRING }
/* Whitespace separated list of backend server names.  Used for
   finding server with the most available free space for proxying
   CREATE. */

{ "servername", NULL, STRING }
/* This is the hostname visible in the greeting messages of the POP,
   IMAP and LMTP daemons. If it is unset, then the result returned
   from gethostname(2) is used. */
   
{ "serverinfo", "on", ENUM("off", "min", "on") }
/* The server information to display in the greeting and capability
   responses. Information is displayed as follows:
.IP
   "off" = no server information in the greeting or capabilities
.br
   "min" = \fIservername\fR in the greeting; no server information in the capabilities
.br
   "on" = \fIservername\fR and product version in the greeting;
product version in the capabilities */

{ "sha1_dir", NULL, STRING }
/* Top level directory for SHA1 store manipulated by make_sha1. File
   structure within this directory is one file for each user on the system,
   hashed on the first letter of the userid (e.g: /var/imap/sha1/d/dpc22). */

{ "sharedprefix", "Shared Folders", STRING }
/* If using the alternate IMAP namespace, the prefix for the shared
   namespace.  The hierarchy delimiter will be automatically appended. */

{ "sieve_allowreferrals", 1, SWITCH }
/* If enabled, timsieved will issue referrals to clients when the
   user's scripts reside on a remote server (in a Murder).
   Otherwise, timsieved will proxy traffic to the remote server. */

{ "sieve_extensions", "fileinto reject vacation imapflags notify envelope relational regex subaddress copy", BITFIELD("fileinto", "reject", "vacation", "imapflags", "notify", "include", "envelope", "body", "relational", "regex", "subaddress", "copy") }
/* Space-separated list of Sieve extensions allowed to be used in
   sieve scripts, enforced at submission by timsieved(8).  Any
   previously installed script will be unaffected by this option and
   will continue to execute regardless of the extensions used.  This
   option has no effect on options that are disabled at compile time
   (e.g., "regex"). */

{ "sieve_maxscriptsize", 32, INT }
/* Maximum size (in kilobytes) any sieve script can be, enforced at
   submission by timsieved(8). */

{ "sieve_maxscripts", 5, INT }
/* Maximum number of sieve scripts any user may have, enforced at
   submission by timsieved(8). */
   
{ "sieve_utf8fileinto", 0, SWITCH }
/* If enabled, the sieve engine expects folder names for the
   \fIfileinto\fR action in scripts to use UTF8 encoding.  Otherwise,
   modified UTF7 encoding should be used. */ 

{ "sieve_sasl_send_unsolicited_capability", 0, SWITCH }
/* If enabled, timsieved will emit a capability response after a successful
   SASL authentication, per draft-martin-managesieve-12.txt . */

{ "sievedir", "/usr/sieve", STRING }
/* If sieveusehomedir is false, this directory is searched for Sieve
   scripts. */

{ "sievenotifier", NULL, STRING }
/* Notifyd(8) method to use for "SIEVE" notifications.  If not set, "SIEVE"
   notifications are disabled.
.PP
   This method is only used when no method is specified in the script. */

{ "sieveusehomedir", 0, SWITCH }
/* If enabled, lmtpd will look for Sieve scripts in user's home
   directories: ~user/.sieve. */

{ "singleinstancestore", 1, SWITCH }
/* If enabled, imapd, lmtpd and nntpd attempt to only write one copy
   of a message per partition and create hard links, resulting in a
   potentially large disk savings. */

{ "skiplist_always_checkpoint", 1, SWITCH }
/* If enabled, this option forces the skiplist cyrusdb backend to
   always checkpoint when doing a recovery.  This causes slightly
   more IO, but on the other hand leads to more efficient databases,
   and the entire file is already "hot". */

{ "skiplist_unsafe", 0, SWITCH }
/* If enabled, this option forces the skiplist cyrusdb backend to
   not sync writes to the disk.  Enabling this option is NOT RECOMMENDED. */

{ "soft_noauth", 1, SWITCH }
/* If enabled, lmtpd returns temporary failures if the client does not
   successfully authenticate.  Otherwise lmtpd returns permanent failures
   (causing the mail to bounce immediately). */

{ "sql_database", NULL, STRING }
/* Name of the database which contains the cyrusdb table(s). */

{ "sql_engine", NULL, STRINGLIST("mysql", "pgsql", "sqlite") }
/* Name of the SQL engine to use. */

{ "sql_hostnames", "", STRING }
/* Comma separated list of SQL servers (in host[:port] format). */

{ "sql_passwd", NULL, STRING }
/* Password to use for authentication to the SQL server. */

{ "sql_user", NULL, STRING }
/* Username to use for authentication to the SQL server. */

{ "sql_usessl", 0, SWITCH }
/* If enabled, a secure connection will be made to the SQL server. */

{ "srvtab", "", STRING }
/* The pathname of \fIsrvtab\fR file containing the server's private
   key.  This option is passed to the SASL library and overrides its
   default setting. */

{ "submitservers", NULL, STRING }
/* A list of users and groups that are allowed to resolve "urlauth=submit+"
   IMAP URLs, separated by spaces.  Any user listed in this will be
   allowed to fetch the contents of any valid "urlauth=submit+" IMAP URL:
   use with caution. */ 

{ "subscription_db", "flat", STRINGLIST("flat", "berkeley", "berkeley-hash", "skiplist")}
/* The cyrusdb backend to use for the subscriptions list. */

{ "statuscache", 0, SWITCH }
/* Enable/disable the imap status cache. */

{ "statuscache_db", "berkeley-nosync", STRINGLIST("berkeley", "berkeley-nosync", "berkeley-hash", "berkeley-hash-nosync", "skiplist") }
/* The cyrusdb backend to use for the imap status cache. */

{ "sync_authname", NULL, STRING }
/* The authentication name to use when authenticating to a sync server. */

{ "sync_batch_size", 0, INT }
/* Maximum number of messages to upload to a replica at one time.
   A batch size of 0, the default, will disable batching (ALL messages
   will be sent). */

{ "sync_compress", 0, SWITCH }
/* Enable compression on replication traffic */

{ "sync_host", NULL, STRING }
/* Name of the host (replica running sync_server(8)) to which
   replication actions will be sent by sync_client(8). */

{ "sync_log", 0, SWITCH }
/* Enable replication action logging by lmtpd(8), imapd(8), pop3d(8),
   and nntpd(8).  The log {configdirectory}/sync/log is used by
   sync_client(8) for "rolling" replication. */

{ "sync_password", NULL, STRING }
/* The default password to use when authenticating to a sync server. */

{ "sync_realm", NULL, STRING }
/* The authentication realm to use when authenticating to a sync server. */

{ "sync_repeat_interval", 1, INT }
/* Minimum interval (in seconds) between replication runs in rolling
   replication mode. If a replication run takes longer than this
   time, we repeat immediately. */

{ "sync_shutdown_file", NULL, STRING }
/* Simple latch used to tell sync_client(8) that it should shut down at the
   next opportunity. Safer than sending signals to running processes */

{ "syslog_prefix", NULL, STRING }
/* String to be prepended to the process name in syslog entries. */

{ "temp_path", "/tmp", STRING }
/* The pathname to store temporary files in */

{ "timeout", 30, INT }   
/* The length of the IMAP server's inactivity autologout timer,       
   in minutes.  The minimum value is 30, the default. */

{ "tls_ca_file", NULL, STRING }
/* File containing one or more Certificate Authority (CA) certificates. */

{ "tls_ca_path", NULL, STRING }
/* Path to directory with certificates of CAs.  This directory must
   have filenames with the hashed value of the certificates (see
   openssl(XXX)). */

{ "tlscache_db", "berkeley-nosync", STRINGLIST("berkeley", "berkeley-nosync", "berkeley-hash", "berkeley-hash-nosync", "skiplist", "sql")}
/* The cyrusdb backend to use for the TLS cache. */

{ "tls_cert_file", NULL, STRING }
/* File containing the certificate presented for server authentication
   during STARTTLS.  A value of "disabled" will disable SSL/TLS. */

{ "tls_cipher_list", "DEFAULT", STRING }
/* The list of SSL/TLS ciphers to allow.  The format of the string is
   described in ciphers(1). */

{ "tls_key_file", NULL, STRING }
/* File containing the private key belonging to the server
   certificate.  A value of "disabled" will disable SSL/TLS. */

{ "tls_require_cert", 0, SWITCH }
/* Require a client certificate for ALL services (imap, pop3, lmtp, sieve). */

{ "tls_session_timeout", 1440, INT }
/* The length of time (in minutes) that a TLS session will be cached
   for later reuse.  The maximum value is 1440 (24 hours), the
   default.  A value of 0 will disable session caching. */

{ "umask", "077", STRING }
/* The umask value used by various Cyrus IMAP programs. */

{ "userdeny_db", "flat", STRINGLIST("flat", "berkeley", "berkeley-hash", "skiplist", "sql")}
/* The cyrusdb backend to use for the user access list. */

{ "user_folder_limit", 0, INT }
/* Limit the number of folders a user can create in their INBOX.  
   Set to 0 (default) for no limit.  Only affects folders in user. */

{ "username_tolower", 1, SWITCH }
/* Convert usernames to all lowercase before login/authentication.  This
   is useful with authentication backends which ignore case during
   username lookups (such as LDAP).  */

{ "userprefix", "Other Users", STRING }
/* If using the alternate IMAP namespace, the prefix for the other users
   namespace.  The hierarchy delimiter will be automatically appended. */

# xxx badly worded
{ "unix_group_enable", 1, SWITCH }
/* Should we look up groups when using auth_unix (disable this if you are
   not using groups in ACLs for your IMAP server, and you are using auth_unix
   with a backend (such as LDAP) that can make getgrent() calls very
   slow) */

{ "unixhierarchysep", 0, SWITCH }
/* Use the UNIX separator character '/' for delimiting levels of
   mailbox hierarchy.  The default is to use the netnews separator
   character '.'. */

{ "virtdomains", "off", ENUM("off", "userid", "on") }
/* Enable virtual domain support.  If enabled, the user's domain will
   be determined by splitting a fully qualified userid at the last '@'
   or '%' symbol.  If the userid is unqualified, and the virtdomains
   option is set to "on", then the domain will be determined by doing
   a reverse lookup on the IP address of the incoming network
   interface, otherwise the user is assumed to be in the default
   domain (if set). */

/*
.SH SEE ALSO
.PP
\fBimapd(8)\fR, \fBpop3d(8)\fR, \fBnntpd(8)\fR, \fBlmtpd(8)\fR,
\fBtimsieved(8)\fR, \fBidled(8)\fR, \fBnotifyd(8)\fR,
\fBdeliver(8)\fR, \fBmaster(8)\fR, \fBciphers(1)\fR
*/
