Can anyone outline the various reasons why a renamemailbox operation would fail when moving users from backend to backend in a Murder? I move a lot of users around in order to do system upgrades and there are always a few users where the renames fail, leaving them spread across two systems. The only error is the unhelpful "dump_mailbox() failed". Thanks, Tod Pike -- Tod Pike Manager of Enterprise Services School of Computer Science Carnegie Mellon University, Pittsburgh, Pa ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html