Meno wrote:
Dear list,I am trying to fetch mails with empty Return-Path: mail header with header_checks, but unsucessfully...
what do you mean by fetch? header_checks don't fetch mail.
header_checks=pcre:/etc/postfix/header_checks header_checks: /^Return-Path:\\s+\\/ REJECT Does this format correct?
No. it would be /^Return-Path:\s*$/ REJECTbut where did you see messages with an empty Return-Path. This header should not be present on the wire. it should only be added at delivery time.