Hi, I am completely new to all this. I just managed to get postfix to receive e-mails from two domains, say domain1.eu and domain2.eu. I have squirrelmail set up for each domain, on mail.domain1.eu and mail.domain2.eu. Is there a way to set up postfix in such way that I can choose whether to send mail from domain1.eu or from domain2.eu? Right now all e-mails are coming from domain1.eu. Does it have something to do with $mydomain, $myorigin? Do I set it up using local/remote_header_rewrite_domain? Thanks for you patience and reply... Lukas