vvrpgsporcupineorg hanspeter kunz hello im trying rewrite received headers sasl authenticated senders order avoid mails classified spam sending dynamic ip header_checks pcrepcre_dirauth_received_header_anonymisationpcre works fine one recipient received 1921682111 80218159224dclienthispeedch 80218159224 authenticated sender hkunz nikolaiifiuzhch postfix esmtp id 342302a6b2b wed 20 feb 2008 180717 0100 cet rewritten something like received authenticated sender hkunz nikolaiifiuzhch postfix esmtp id 1069b2a6b31 wed 20 feb 2008 181646 0100 cet soon recipients cc received header rewritten looks header_checks applied emails use postmap q received header email matched rewritten correctly observation incorrect postfix log sasl username regardless number recipients postfix log mail multiple recipients wietse thu 07 aug 2008 134527 0500 header_checks handled differently emails one recipient