We are looking at upgrading from Cyrus IMAP 2.3 to 2.4. We run a Murder with one front end server and one back end server. We plan to XFER mailboxes from the old back end to a new back end server with more storage. From the mailing list I understand we should upgrade the front end server first before transferring mailboxes. My planned changes for the front end server are to add the suppress_capabilities directive to imapd.conf, ensure the lock directory is created on tmpfs and touch a blank user_deny.db. My expectation is that I can stop the front end server, upgrade the software and restart it with the updated imapd.conf. As far as the front end upgrade is concerned, is there really any difference between the behaviour of 2.3 vs 2.4? Most of the changes appear to be focused on the mailbox handling code. Does anyone running a Murder have experience of the upgrade from 2.3 to 2.4 they could share? Will users notice any difference at this stage? Thanks, Dave. David Mayo Networks/Systems Administrator University of Bath Computing Services, UK ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/