off-campus mail. Cyrus is still being actively developed. Carnegie Mellon University remains active in development, and also provides the infrastructure on which cyrusimap.org runs. Staff at Fastmail contribute much of the recent work, as they depend upon it as part of their commercial service. See also Comparison of mail servers Comparison of CalDAV and CardDAV implementations UW IMAP References Bibliography External links Message transfer agents Free email server software Email server software for Linux Carnegie Mellon University software