The Cyrus IMAP server is a scalable enterprise mail system designed for use from small to large enterprise environments using standards-based technologies.
cyrus-imapd-2.1.14: description + notes
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 isthrough 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.
SGI Notes:
The server as shipped includes support for SSL and TLS connections via OpenSSL.
Read
/usr/freeware/cyrus/etc/READMEfor details of configuring sendmail to use cyrus for local delivery rather than mail. If you don't configure sendmail, cyrus-imapd will not work.From personal experience, if you wish to use plus (+) mailbox addressing, then don't use lmtp as the delivery mechanism.
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