luc...@dds.nl: > Hi List, > > > I am running a mailing list server using?the ListServ software. List > members can send a message to a list, and the software essentially > forwards the message to the entire list, using the?following headers: > ? ? Sender: <The local list mail address> > ? ? From: <The mail address of the original sender of the message> > I use my own Postfix implementation as SMTP server to send the forwarded > message. > > DMARC is increasingly causing problems for my list users, because the > "From:" sender does not match the sending server (which is my own > server). > > One way to mitigate this problem would be to use the list address in > "From:". But the ListServ software does not support this. > > My question: Is it possible to configure?Postfix to replace the address > in the "From:" header with the value in the "Sender:" header? > > If possible, the replacement should preferably be done for specific > values in the "Sender:" header, so it will not be implemented for all my > lists at the same time.
This would require a Milter or other content filter. Milters are available in Perl, Python, and other languages. If someome could write this up then I could add a note to the Postfix documentation. For the Postfix side, see http://www.postfix.org/MILTER_README.html Wietse
