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Editing: imapd
##VERSION: $Id: 675bac8a9b30dff4f1968cec803a51c89b6b1b1b-20210301071151$ # # imapd created from imapd.dist by sysconftool # # Do not alter lines that begin with ##, they are used when upgrading # this configuration. # # Copyright 1998 - 2015 Double Precision, Inc. See COPYING for # distribution information. # # This configuration file sets various options for the Courier-IMAP server # when used with the couriertcpd server. # A lot of the stuff here is documented in the manual page for couriertcpd. # # NOTE - do not use \ to split long variable contents on multiple lines. # This will break the default imapd.rc script, which parses this file. # ##NAME: ADDRESS:0 # # Address to listen on, can be set to a single IP address. # # ADDRESS=127.0.0.1 ADDRESS=0 ##NAME: PORT:1 # # Port numbers that connections are accepted on. The default is 143, # the standard IMAP port. # # Multiple port numbers can be separated by commas. When multiple port # numbers are used it is possible to select a specific IP address for a # given port as "ip.port". For example, "127.0.0.1.900,192.68.0.1.900" # accepts connections on port 900 on IP addresses 127.0.0.1 and 192.68.0.1 # The previous ADDRESS setting is a default for ports that do not have # a specified IP address. PORT=143 ##NAME: AUTHSERVICE:0 # # It's possible to authenticate using a different 'service' parameter # depending on the connection's port. This only works with authentication # modules that use the 'service' parameter, such as PAM. Example: # # AUTHSERVICE143=imap # AUTHSERVICE993=imaps ##NAME: MAXDAEMONS:0 # # Maximum number of IMAP servers started # MAXDAEMONS=40 ##NAME: MAXPERIP:0 # # Maximum number of connections to accept from the same IP address MAXPERIP=20 ##NAME: PIDFILE:0 # # File where couriertcpd will save its process ID # PIDFILE=/run/courier/imapd.pid ##NAME: TCPDOPTS:0 # # Miscellaneous couriertcpd options that shouldn't be changed. # TCPDOPTS="-nodnslookup -noidentlookup" ##NAME: ACCESSFILE:0 # # IMAP access file. IMAPACCESSFILE=/etc/courier/imapaccess ##NAME: LOGGEROPTS:0 # # courierlogger(1) options. # LOGGEROPTS="-name=imapd" ##NAME: DEFDOMAIN:0 # # Optional default domain. If the username does not contain the # first character of DEFDOMAIN, then it is appended to the username. # If DEFDOMAIN and DOMAINSEP are both set, then DEFDOMAIN is appended # only if the username does not contain any character from DOMAINSEP. # You can set different default domains based on the the interface IP # address using the -access and -accesslocal options of couriertcpd(1). #DEFDOMAIN="@example.com" ##NAME: IMAP_CAPABILITY:1 # # IMAP_CAPABILITY specifies what most of the response should be to the # CAPABILITY command. # # If you have properly configured Courier to use CRAM-MD5, CRAM-SHA1, or # CRAM-SHA256 authentication (see INSTALL), set IMAP_CAPABILITY as follows: # # IMAP_CAPABILITY="IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA AUTH=CRAM-MD5 AUTH=CRAM-SHA1 AUTH=CRAM-SHA256 IDLE" # IMAP_CAPABILITY="IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE" ##NAME: KEYWORDS_CAPABILITY:0 # # IMAP_KEYWORDS=1 enables custom IMAP keywords. Set this option to 0 to # disable custom keywords. # # IMAP_KEYWORDS=2 also enables custom IMAP keywords, but uses a slower # algorithm. Use this setting if keyword-related problems occur when # multiple IMAP clients are updating keywords on the same message. IMAP_KEYWORDS=1 ##NAME: ACL_CAPABILITY:0 # # IMAP_ACL=1 enables IMAP ACL extension. Set this option to 0 to # disable ACL capabilities announce. IMAP_ACL=1 ##NAME: SMAP1_CAPABILITY:0 # # EXPERIMENTAL # # To enable the experimental "Simple Mail Access Protocol" extensions, # uncomment the following setting. # # SMAP_CAPABILITY=SMAP1 ##NAME: IMAP_CAPABILITY_ORIG:2 # # For use by webadmin IMAP_CAPABILITY_ORIG="IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA AUTH=CRAM-MD5 AUTH=CRAM-SHA1 AUTH=CRAM-SHA256 IDLE" ##NAME: IMAP_PROXY:0 # # Enable proxying. See README.proxy IMAP_PROXY=0 ##NAME: PROXY_HOSTNAME:0 # # Override value from gethostname() when checking if a proxy connection is # required. # # PROXY_HOSTNAME= ##NAME: IMAP_PROXY_FOREIGN:0 # # Proxying to non-Courier servers. Re-sends the CAPABILITY command after # logging in to the remote server. May not work with all IMAP clients. IMAP_PROXY_FOREIGN=0 ##NAME: IMAP_IDLE_TIMEOUT:0 # # This setting controls how often # the server polls for changes to the folder, in IDLE mode (in seconds). IMAP_IDLE_TIMEOUT=60 ##NAME: IMAP_MAILBOX_SANITY_CHECK:0 # # Sanity check -- make sure home directory and maildir's ownership matches # the IMAP server's effective uid and gid IMAP_MAILBOX_SANITY_CHECK=1 ##NAME: IMAP_CAPABILITY_TLS:0 # # The following setting will advertise SASL PLAIN authentication after # STARTTLS is established. If you want to allow SASL PLAIN authentication # with or without TLS then just comment this out, and add AUTH=PLAIN to # IMAP_CAPABILITY IMAP_CAPABILITY_TLS="$IMAP_CAPABILITY AUTH=PLAIN" ##NAME: IMAP_TLS_ORIG:0 # # For use by webadmin IMAP_CAPABILITY_TLS_ORIG="$IMAP_CAPABILITY_ORIG AUTH=PLAIN" ##NAME: IMAP_DISABLETHREADSORT:0 # # Set IMAP_DISABLETHREADSORT to disable the THREAD and SORT commands - # server side sorting and threading. # # Those capabilities will still be advertised, but the server will reject # them. Set this option if you want to disable all the extra load from # server-side threading and sorting. Not advertising those capabilities # will simply result in the clients reading the entire folder, and sorting # it on the client side. That will still put some load on the server. # advertising these capabilities, but rejecting the commands, will stop this # silliness. # IMAP_DISABLETHREADSORT=0 ##NAME: IMAP_CHECK_ALL_FOLDERS:0 # # Set IMAP_CHECK_ALL_FOLDERS to 1 if you want the server to check for new # mail in every folder. Not all IMAP clients use the IMAP's new mail # indicator, but some do. Normally new mail is checked only in INBOX, # because it is a comparatively time consuming operation, and it would be # a complete waste of time unless mail filters are used to deliver # mail directly to folders. # # When IMAP clients are used which support new mail indication, and when # mail filters are used to sort incoming mail into folders, setting # IMAP_CHECK_ALL_FOLDERS to 1 will allow IMAP clients to announce new # mail in folders. Note that this will result in slightly more load on the # server. # IMAP_CHECK_ALL_FOLDERS=0 ##NAME: IMAP_OBSOLETE_CLIENT:0 # # Set IMAP_OBSOLETE_CLIENT if your IMAP client expects \\NoInferiors to mean # what \\HasNoChildren really means. IMAP_OBSOLETE_CLIENT=0 ##NAME: IMAP_UMASK:0 # # IMAP_UMASK sets the umask of the server process. The value of IMAP_UMASK is # simply passed to the "umask" command. The default value is 022. # # This feature is mostly useful for shared folders, where the file permissions # of the messages may be important. IMAP_UMASK=022 ##NAME: IMAP_ULIMITD:0 # # IMAP_ULIMITD sets the maximum size of the data segment of the server # process. The value of IMAP_ULIMITD is simply passed to the "ulimit -d" # command (or ulimit -v). The argument to ulimi sets the upper limit on the # size of the data segment of the server process, in kilobytes. The default # value of 65536 sets a very generous limit of 64 megabytes, which should # be more than plenty for anyone. # # This feature is used as an additional safety check that should stop # any potential denial-of-service attacks that exploit any kind of # a memory leak to exhaust all the available memory on the server. # It is theoretically possible that obscenely huge folders will also # result in the server running out of memory when doing server-side # sorting (by my calculations you have to have at least 100,000 messages # in a single folder, for that to happen). IMAP_ULIMITD=131072 ##NAME: IMAP_USELOCKS:0 # # Setting IMAP_USELOCKS to 1 will use dot-locking to support concurrent # multiple access to the same folder. This incurs slight additional # overhead. Concurrent multiple access will still work without this setting, # however occasionally a minor race condition may result in an IMAP client # downloading the same message twice, or a keyword update will fail. # # IMAP_USELOCKS=1 is strongly recommended when shared folders are used. IMAP_USELOCKS=1 ##NAME: IMAP_SHAREDINDEXFILE:0 # # The index of all accessible folders. Do not change this setting unless # you know what you're doing. See README.sharedfolders for additional # information. IMAP_SHAREDINDEXFILE=/etc/courier/shared/index ##NAME: IMAP_ENHANCEDIDLE:0 # # If Courier was compiled with the File Alteration Monitor, setting # IMAP_ENHANCEDIDLE to 1 enables enhanced IDLE mode, where multiple # clients may open the same folder concurrently, and receive updates to # folder contents in realtime. See the imapd(8) man page for additional # information. # # IMPORTANT: IMAP_USELOCKS *MUST* also be set to 1, and IDLE must be included # in the IMAP_CAPABILITY list. # IMAP_ENHANCEDIDLE=0 ##NAME: IMAP_TRASHFOLDERNAME:0 # # The name of the magic trash Folder. For MSOE compatibility, # you can set IMAP_TRASHFOLDERNAME="Deleted Items". # # IMPORTANT: If you change this, you must also change IMAP_EMPTYTRASH IMAP_TRASHFOLDERNAME=Trash ##NAME: IMAP_EMPTYTRASH:0 # # The following setting is optional, and causes messages from the given # folder to be automatically deleted after the given number of days. # IMAP_EMPTYTRASH is a comma-separated list of folder:days. The default # setting, below, purges 7 day old messages from the Trash folder. # Another useful setting would be: # # IMAP_EMPTYTRASH=Trash:7,Sent:30 # # This would also delete messages from the Sent folder (presumably copies # of sent mail) after 30 days. This is a global setting that is applied to # every mail account, and is probably useful in a controlled, corporate # environment. # # Important: the purging is controlled by CTIME, not MTIME (the file time # as shown by ls). It is perfectly ordinary to see stuff in Trash that's # a year old. That's the file modification time, MTIME, that's displayed. # This is generally when the message was originally delivered to this # mailbox. Purging is controlled by a different timestamp, CTIME, which is # changed when the file is moved to the Trash folder (and at other times too). # # You might want to disable this setting in certain situations - it results # in a stat() of every file in each folder, at login and logout. # IMAP_EMPTYTRASH=Trash:7 ##NAME: IMAP_MOVE_EXPUNGE_TO_TRASH:0 # # Set IMAP_MOVE_EXPUNGE_TO_TRASH to move expunged messages to Trash. This # effectively allows an undo of message deletion by fishing the deleted # mail from trash. Trash can be manually expunged as usually, and mail # will get automatically expunged from Trash according to IMAP_EMPTYTRASH. # # NOTE: shared folders are still expunged as usual. Shared folders are # not affected. # IMAP_MOVE_EXPUNGE_TO_TRASH=0 ##NAME: IMAP_LOG_DELETIONS:0 # # # Set IMAP_LOG_DELETIONS to log all message deletions to syslog. # # IMAP_LOG_DELETIONS=1 ##NAME: AUTH_MKHOMEDIR_SKEL:0 # # Uncomment this setting to automatically create a home directory on first # login. if the AUTH_MKHOMEDIR_SKEL environment variable is set, and the # home directory does not exist, the home directory gets created, with its # initial contents copied from AUTH_MKHOMEDIR_SKEL which must be a directory, # typically /etc/skel. # # Note that this must be a complete home directory structure, including # the maildir. Typically: # # mkdir /etc/skel # chmod 700 /etc/skel # maildirmake /etc/skel/Maildir # # This directory gets copied as is, preserving each file/subdirectory's # permissions, with only userid/groupid changed to match the account's. # # # AUTH_MKHOMEDIR_SKEL=/etc/skel ##NAME: IMAPDEBUGFILE:0 # # IMAPDEBUGFILE="imaplog.dat" # # Generate diagnostic logging of IMAP commands. # # Set this globally, restart the server. Touch this file in an account's # maildir directory, and Courier-IMAP will append all IMAP commands received # for new sessions for this account. NOTE: existing IMAP sessions are not # affected, only new IMAP logins. ##NAME: OUTBOX:0 # # The next set of options deal with the "Outbox" enhancement. # Uncomment the following setting to create a special folder, named # INBOX.Outbox # # OUTBOX=.Outbox ##NAME: SENDMAIL:0 # # If OUTBOX is defined, mail can be sent via the IMAP connection by copying # a message to the INBOX.Outbox folder. For all practical matters, # INBOX.Outbox looks and behaves just like any other IMAP folder. If this # folder doesn't exist it must be created by the IMAP mail client, just # like any other IMAP folder. The kicker: any message copied or moved to # this folder is will be E-mailed by the Courier-IMAP server, by running # the SENDMAIL program. Therefore, messages copied or moved to this # folder must be well-formed RFC-2822 messages, with the recipient list # specified in the To:, Cc:, and Bcc: headers. Courier-IMAP relies on # SENDMAIL to read the recipient list from these headers (and delete the Bcc: # header) by running the command "$SENDMAIL -oi -t -f $SENDER", with the # message piped on standard input. $SENDER will be the return address # of the message, which is set by the authentication module. # # DO NOT MODIFY SENDMAIL, below, unless you know what you're doing. # SENDMAIL=/usr/sbin/sendmail ##NAME: HEADERFROM:0 # # For administrative and oversight purposes, the return address, $SENDER # will also be saved in the X-IMAP-Sender mail header. This header gets # added to the sent E-mail (but it doesn't get saved in the copy of the # message that's saved in the folder) # # WARNING - By enabling OUTBOX above, *every* IMAP mail client will receive # the magic OUTBOX treatment. Therefore advance LARTing is in order for # _all_ of your lusers, until every one of them is aware of this. Otherwise if # OUTBOX is left at its default setting - a folder name that might be used # accidentally - some people may be in for a rude surprise. You can redefine # the name of the magic folder by changing OUTBOX, above. You should do that # and pick a less-obvious name. Perhaps brand it with your organizational # name ( OUTBOX=.WidgetsAndSonsOutbox ) HEADERFROM=X-IMAP-Sender ##NAME: ID_FIELDS:0 # # Have the server be polite, and identify its version to the client. The client # must be logged in before the server will identify itself. Additionally, # the client will mutually supply its own software version, and the server will # log it. # # Although the server's banner message identifies itself, in free-form manner, # this the ID IMAP extension, for clients to log. # # IMAP_ID_FIELDS is the sum of the following values: # # 1 - identify the version of the IMAP server # 2 - identify the operating system (if available) # 4 - identify the operating system release (if available) # # A value of 0 identifies the server software only. # # Uncomment this setting to enable the IMAP ID extension. One reason you might # want to enable it is to log the clients' software version. Enabling this # setting will mutually log the client's software, in the system logs. # # IMAP_ID_FIELDS=0 ##NAME: OUTBOX_MULTIPLE_SEND:0 # # Remove the following comment to allow a COPY of more than one message to # the Outbox, at a time. # # OUTBOX_MULTIPLE_SEND=1 ##NAME: IMAPDSTART:0 # # IMAPDSTART is not used directly. Rather, this is a convenient flag to # be read by your system startup script in /etc/rc.d, like this: # # . /etc/courier/imapd # # case x$IMAPDSTART in # x[yY]*) # /usr/lib/courier/imapd.rc start # ;; # esac # # The default setting is going to be NO, so you'll have to manually flip # it to yes. IMAPDSTART=YES ##NAME: MAILDIRPATH:0 # # MAILDIRPATH - directory name of the maildir directory. # MAILDIRPATH=Maildir
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