* Matthew Kitchin via Postfix-users <postfix-users@postfix.org> [250522 12:12]: > On Thu, May 22, 2025 at 10:46 AM Wietse Venema <wie...@porcupine.org> wrote: > > > > How can I help? The purpose of my request is to find out if the > > unexpected display name change happens before Postfix receives the > > message, while Postfix processes the message, or after Postfix > > delivers the message. > > > I'm sorry. I just realized these replies were going to you and not the > list. Adding list back. > My path (for testing) is Thunderbird => Postfix => Azure SMTP => Corp > Outlook&Personal Gmail > I added the logging you indicated, and I don't believe we see any sign > of Posftix changing it. It is a very minimal Postfix relay server. > Case 1, Thunderbird sends as f...@example.com with display name John > Doe - all good. > Case 2, Thunderbird sends as fo...@example.com with this line in > main.cf sender_canonical_maps = f...@example.com > In case 2, header on received end now shows display name as > "f...@exampled.com" > I am not doing any header manipulation in Postfix. The only config I > did is the smarthost to Azure with Auth and the one sender rewrite > rule. > I am happy to capture anything else. Were you expecting to see more > info from the header_checks?
What is «postconf sender_canonical_maps»? Is it sender_canonical_maps = f...@example.com If so, you need to read «man 5 canonical». sender_canonical_maps should be a mapping table with each row containing a pattern and an address. Frequently the value of sender_canonical_maps is something like «hash:/etc/postfix/canonical» with that file containing the mappings. ...Marvin _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
