Originally Posted by bersi
2 domeins are registered within ispconfig on the same server x and y, both with each one user info@x and info@y (mail).
When i open the user definition for domain x an there put in a mailforward to info@y (the mailuser from y) and i swich on the keep local copy option, the mail send to info@x ends up in his box (as expected) but also in the postfix box on the system. This is anoying since this box is not emptied automatically and therefore could be flooded.
Are info@x and info@y in /etc/postfix/virtusertable? What's in /etc/aliases?
Don't do it!
Have a look here: http://www.howtoforge.com/forums/showthread.php?t=821