why does renamemailbox fail?

[Tod Pike]

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