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 email@example.com on my ISPConfig server should be forwarded to external mailbox firstname.lastname@example.org This works fine but one important thing.
When opening the mailbox for email@example.com I see the mail with the original sender name, and the original recipient name, i.e. firstname.lastname@example.org
I have tried the forward function and the send copy function on a mailbox in ISPConfig. Both cases show the original recipient email@example.com instead of the final recipient firstname.lastname@example.org, as it would when I manually forward an e-mail.
Can this be achieved without having to maintain a list for each entry? Thanks for looking into this.