M. Jolic writes:
Our Users have to login with use...@domain.com with their password and this
has to be transmitted, otherwise our server wouldn't allow to log in.
So, use...@domain.com is transmitted and via the authvmailmgr authenticated
as mentioned on www.inter7.com (->free software->courier-imap).
Sounds like a vmailmgr issue. Courier-IMAP has no issue authenticating
virtual login IDs with fully-qualified domain names.