On 2023-12-17 at 04:45:04 UTC-0500 (Sun, 17 Dec 2023 10:45:04 +0100) Benny Pedersen via mailop <m...@junc.eu> is rumored to have said:
false, every forwarder changes envelope sender,
No matter how many times you say this, it remains a dangerously misleading lie.
If, on a Unix-like system running Postfix or Sendmail in their most common configurations, you place a file in a user's home directory named ".forward," then the MTA will not deliver messages locally but will relay them via SMTP to the address in the .forward file using the same envelope sender as the message used in its arrival. Addresses which are directed via the /etc/aliases or other 'aliasing' mechanisms ALSO are relayed using the original envelope sender.
That FACT is the entire reason the SRS mechanism (and tools like postsrsd) exist. Traditional forwarding breaks SPF. Everyone involved knew this from the earliest discussions that resulted in SPF.
-- Bill Cole b...@scconsult.com or billc...@apache.org (AKA @grumpybozo and many *@billmail.scconsult.com addresses) Not Currently Available For Hire _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
