Bernie Rossi, CalMail Team
CommuniGate Pro (CGPro), the email server application that CalMail currently uses, is being phased out and replaced with Cyrus. Cyrus is open source, actively developed, and used by a wide community including many institutions of higher education. Our new Cyrus implementation has been designed to meet the growing performance and scalability requirements of the CalMail system. CalMail users should notice a performance improvement over the current CGPro environment, as well as new IMAP enhancements including server-side sorting and threading.
We will be gradually migrating all CalMail accounts from CGPro to Cyrus during October and November. While this process will be transparent for most users, there will be a few changes that you and your users should be aware of.
POP users with the "Leave Mail on Server" option set will receive duplicates of already downloaded messages the first time they access their account after it has been migrated. The migration will cause POP clients to consider all messages stored in an Inbox to be new again since they will be connecting to Cyrus instead of CGPro. We will be sending a separate notice to the largest CalMail POP accounts that we believe are using "Leave Mail on Server".
Note: For campus systems administrators, if your users are using POP with "Leave Mail on Server", you might want to turn off the option, reduce the time left on the server to 7 days, or switch them to IMAP.
Server-side mail filters, which are currently run within CGPro, will now be handled by Cyrus using Sieve, the Internet Proposed Standard Protocol for mail filtering. The change to Sieve will simplify server-side mail filtering for CalMail users and allow us to provide a new, more friendly web interface for modifying filters. However, a small number of filters on the current CalMail system cannot be automatically converted to Sieve. We will be contacting users with these filters individually.
If you have any questions or concerns, please write to
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