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The Cyrus IMAP (Internet Message Access Protocol) server provides access
to personal mail and system-wide bulletin boards through the IMAP
protocol. The Cyrus IMAP server is a scalable enterprise mail system
designed for use from small to large enterprise environments using
standards-based technologies.
A full Cyrus IMAP implementation allows a seamless mail and bulletin
board environment to be set up across multiple servers. It differs from
other IMAP server implementations in that it is run on "sealed" servers,
where users are not normally permitted to log in. The mailbox database
is stored in parts of the filesystem that are private to the Cyrus IMAP
system. All user access to mail is through software using the IMAP,
POP3, or KPOP protocols.
The private mailbox database design gives the server large advantages in
efficiency, scalability, and administratability. Multiple concurrent
read/write connections to the same mailbox are permitted. The server
supports access control lists on mailboxes and storage quotas on mailbox
hierarchies.
Cyrus is a highly scalable enterprise mail system designed for use in
enterprise environments of various sizes using standards based
technologies. Cyrus technologies scale from independent use in email
departments to a system centrally managed in a large enterprise.
For more information on how to install and run cyrus-imapd, see
README.SLACKWARE that came with this package (which is also installed
with the documentation).
Patches for autocreate and autosieve are no longer needed so they were
removed.
Make sure to read the Upgrading to Cyrus IMAP 2.5.0 notes:
https://cyrusimap.org/imap/release-notes/2.5/x/2.5.0.html
You must have a "cyrus" user and group to run this script.
Something like this will create them:
# groupadd -g 238 cyrus
# useradd -d /var/imap -s /bin/sh -u 238 -g 238 cyrus
See http://slackbuilds.org/uid_gid.txt for uid/gid suggestions.
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