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Cyrus Imap ServerThe Cyrus IMAP server differs from other IMAP server implementations in that it is generally intended to be run on sealed servers, where normal users are not 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 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. The last Cyrus IMAP version is 2.2.10 released 2004-11-23 History Prior to 1994, CMU used the locally-developed and non-standard AndrewMailSystem (AMS) for its email communication needs. Originally written in the early 80s as part of the AndrewProject, it was very advanced for its day. However, it was beginning to show signs of age and significant drawbacks with it had been found. It was also desired to move to a standards compliant mail system that met or exceeded the feature set of AMS. The Cyrus Project was started at CMU in 1994 to attempt to meet these goals. The following are some documents that date from that era and describe the origial goals of the project. As such they may be somewhat out of date. The first year that all of CMU's incoming freshmen were placed on the Cyrus server was 1998 (class of 2002). In December of 2001, bboard access (which had been being mirrored from AMS to Cyrus), was cut over to Cyrus completely. AMS was finally phased out in May of 2002. As development on the project progressed, it became clear that scalability was a concern, in addition some additional reliablilty was desired beyond that which would be provided from a single machine configuration. To meet these goals, the CyrusMurder was developed, and after several revisions was deployed to CMU in the summer of 2002. SOURCE -- RobSiemborski - 24 Jul 2003 References * Cyrus Downloads
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