@ in mailboxname: 2.4 vs. 2.5

[Wolfgang Breyha]

Hi!

If not using virtual domains it was always allowed to use "@" in mailbox
names and our users did. Up to 2.4.

2.5 considers it as "invalid mailbox name" due to a change in mboxname.c

This makes 2.5 highly incompatible with existing murder infrastructure. Why
was this change introduced and not mentioned in the changelog?

Is it save to remove this limitation from mboxname.c?

Greetings,
Wolfgang
-- 
Wolfgang Breyha <wbreyha at gmx.net> | http://www.blafasel.at/
Vienna University Computer Center | Austria