imapd.conf - IMAP configuration file
The /etc/imapd.conf file is the configuration file for the IMAP server. It
defines local parameters for IMAP.
Each line of the /etc/imapd.conf file has the form option: value where
option is the name of the configuration option being set and value is the
value that the configuration option is being set to.
Blank lines and lines beginning with ``#'' are ignored.
For Boolean options, the values ``yes'', ``on'', ``t'', and ``1'' turn the
option on, the values ``no'', ``off'', ``f'', and ``0'' turn the option
The following sections detail options that can be placed in the
/etc/imapd.conf 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>''.
configdirectory: <no default>
The pathname of the IMAP configuration directory. This field is
The partition name used by default for new mailboxes.
partition-name: <no default>
The pathname of the partition name. At least one field, for the
partition named in the defaultpartition option, is required. For
example, if the value of the defaultpartition option is default,
then the partition-default field is required.
The umask value used by various IMAP programs.
Permit logins by the user "anonymous" using any password. Also
allows use of the SASL ANONYMOUS mechanism.
The percent of quota utilization over which the server generates
The length of the IMAP server's inactivity autologout timer, in
minutes. The minimum value is 30, the default.
The list of userids with administrative rights. Separate each
userid with a space.
Any account that receives mail via the IMAP server should not be
included in the list as an administrator account. This could
cause problems. For instance, this type of administrator would
be able to create top-level mailboxes that are visible to users,
but not writable by users.
defaultacl: anyone lrs
The Access Control List (ACL) placed on a newly-created (non-
user) mailbox that does not have a parent mailbox.
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.
Include notations in the protocol telemetry logs indicating the
number of seconds since the last command or response.
If enabled, the deliver command rejects messages with 8-bit char-
acters in their headers. Otherwise, 8-bit characters are changed
Number of seconds to pause after a successful plain text login.
For systems that support strong authentication, this permits
users to perceive the cost of using plain text passwords. (This
does not affect the use of PLAIN in SASL authentications.)
The pathname of the srvtab file that contains the server's
private key. This option is passed to the SASL library and over-
rides its default setting.
The list of remote realms whose users may log in using cross-
realm authentications. Separate each realm name by a space. (A
cross-realm identity is considered any identity returned by SASL
with an "@" in it.)
If enabled, any authentication identity that has rights on a
user's INBOX may log in as that user.
If enabled, the user mailbox directories in the
/var/spool/imap/user directory are sorted into subdirectories a
through z, just as the files in the user and quota configuration
directories. This is recommended if the data partition has a
highly populated mailbox tree.
The mechanism used by the server to verify plain text passwords.
In Tru64 UNIX, this should be set to tru64. It is needed for
authentication in a C2 environment and for proper mail password
usage. Other possible values also include passwd and shadow.
If enabled, the SASL library automatically creates authentication
secrets when given a plain text password.
Any other SASL option can be set by preceding it with sasl_.
Commands: cyradm(1), deliver(8), imapd(8), imapquota(8), reconstruct(8)
Network Administration: Services