Hello, I have just setup postfix to forward mail to an external smtp gateway, which works as intended. But I have also setup an alias with my provider. As I understand it that is not the same as the alias facility mentioned in the postfix docmumentation. I tried using said alternate identity by using mutt an simply changing the "From" header. It kind of works but seems to leak my real email address, because the "Return-Path" still points to the main address.
I also have a Mozilla Thunderbird setup with said alternate identity. If I send mail from there, the Return-Path matches the alternate address. I am still not sure if I understand the documentation correctly, so I don't know if a similar setup is even possible with postfix. From my current understanding it almost seems that it is not, because postfix rewrites the account name (not the From header) to autenticate with the remote smtp server of my provider and I have not found a way to signal that I am sending using my alternate identity. Is there any way, I can have a setup equivalent to that in Thunderbird? Authenticate using the main account name (main email address) but using the alternate identity as origin? Peter
