Quoting Benny Pedersen <m...@junc.eu>:

Christian Kivalo skrev den 2024-01-21 02:08:

Just wish LMTP would not end up with duplicate Return-Path headers..
Duplicate return path headers? I don't see them on my system. All mail is sent from postfix to dovecot with lmtp

it simply works better with lda ? :)

return-path is std postfix envelope sender pseudo header, bugs ?

it's not a pseudo header, it is defined starting in rfc-822, as to be added at time of delievery.

The LDA should add it, postfix lda add it (virtual/local) and dovecots do also (lda/lmtp)

I have used most postfix versions from 2.1 to 3.8 and dovecot lda and lmtp and haven't have never seen duplicate headers


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