[pfx] Re: returned message path

On 25.08.23 13:45, Henrik Y via Postfix-users wrote: If the messages was delivered into peer system, and peer MTA found it was invalid for delivery, will this message be returned back to the sender host, or returned back to MX server of sender domain? In addition to what has been said, the del

[pfx] Re: returned message path

Per RFC 5321, section 8 Section 6: . Sorry for the typo. -- Étienne Miret https://etienne.miret.io/ ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix

[pfx] Re: returned message path

Hello, Per RFC 5321, section 8, an error message MUST be sent to the sender address. This uses regular MX resolution. Of course, the sender address is the one on the envelope, which is not necessarily related to the one specified in the From: header of the email. Regards, -- Étienne Miret h