The Cyrus IMAP server is electronic mail server software developed by Carnegie Mellon University. It differs from other Internet Message Access Protocol (IMAP) server implementations in that it is generally intended to be run on sealed servers, where normal users cannot log in. The mail spool uses a filesystem layout and format similar to the Maildir format used by other popular email servers such as qmail, Courier, Dovecot, etc. Users can access mail through the IMAP/IMAP-S, POP3/POP3-S or KPOP protocols. The Cyrus IMAP server supports server-side mail filtering through the implementation of a mail filtering language called Sieve. More information...
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