I have setup Postfix as part of my ISPConfig implementation. It should just forward all mail. Clients should be able to define a new alias and receive mail on a different e-mail address, using ISPConfig.
Example: A mail sent to user1@domain1.com on my ISPConfig server should be forwarded to external mailbox user2@domain2.com This works fine but one important thing.
When opening the mailbox for user2@domain2.com I see the mail with the original sender name, and the original recipient name, i.e. user1@domain1.com
I have tried the forward function and the send copy function on a mailbox in ISPConfig. Both cases show the original recipient user1@domain.com instead of the final recipient user2@domain2.com, as it would when I manually forward an e-mail.
Can this be achieved without having to maintain a list for each entry?