Is it possible, that dovecot-lmtp, has in inserted "Received:" header something about its version ie. instead: --8<---------------cut here---------------start------------->8--- Received: from alfa.kjonca by alfa.kjonca with LMTP id n1O7D5Q3v1toSQAApvcrCQ (envelope-from <envelope@from>) for <kjonca@localhost>; Thu, 11 Oct 2018 13:44:20 +0200 --8<---------------cut here---------------end--------------->8---
would be: --8<---------------cut here---------------start------------->8--- Received: from alfa.kjonca (Dovecot version) by alfa.kjonca with LMTP id n1O7D5Q3v1toSQAApvcrCQ (envelope-from <envelope@from>) for <kjonca@localhost>; Thu, 11 Oct 2018 13:44:20 +0200 --8<---------------cut here---------------end--------------->8---
KJ
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