Hi, for migration purposese i want to enable mail users via imap/smtp to log in not only with their full mail adress but also with a login name (e.g. the one from the old setup where i had system users). I found the "Allow custom login name" option, but the handbock doesn't really say where the custom login name would work, it seems it might be for the ispconfig webinterface only. Is there a way to enable it for imap/smtp (dovecot/postfix) so my users don't have to change settings on all their accounts? Thanks. Sorry, it worked already. My testcase was off :-D