Re: Using alternate identity

[Dominic Raferd]

On 05/03/2021 12:40, Peter White wrote:
...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.
..

This is not a postfix issue. In .muttrc:

set envelope_from=yes

mutt will then try to derive the message's envelope sender from the 
"From:" header