We currently have: Cyrus Front-End servers running 2.2.12 Cyrus Back-End running 2.3.16 I have built a new back-end server running 2.4.17. I plan on adding the new, 2.4 server, to the aggregate, and move all the mailboxes. I would rather not upgrade the front-end servers, since they are be retired (and replaced by perdition or nginx). This move motivated by the status of the old SAN disks. I know that there is a NOSELECT issue, but any shared folders will be moved as a group. Are there other issues? Specifically, is the proxy/mupdate protocol compatible? I'm ready to add the new back-end to the aggregate, and run some tests. Thought it might be good to ask here first. Thank You. Mike -- Michael D. Sofka sofkam@xxxxxxx C&MT Sr. Systems Programmer, Email, TeX, Epistemology Rensselaer Polytechnic Institute, Troy, NY. http://www.rpi.edu/~sofkam/ ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus