Hi Albrecht, tested it and it works as it shoud.
big thanks 2017-05-25 14:41 GMT+02:00 <spamv...@googlemail.com>: > Interesting.. > > smtp_header_checks did the trick, header_checks did not. > > 2017-05-25 14:26 GMT+02:00 Albrecht Dreß <albrecht.dr...@arcor.de>: > >> Am 25.05.17 14:20 schrieb(en) spamv...@googlemail.com: >> >>> since three days I'm trying to remove my internal and external IP from >>> the Message header when I'm sending mails. But no solution has worked so >>> far. >>> >>> What I did: >>> created a new service in master.cf >>> >> >> A simpler solution (working for me) for all outgoing messages is to add >> >> <snip> >> smtp_header_checks = pcre:/etc/postfix/clean_outgoing_headers >> </snip> >> >> to /etc/postfix/main.cf. The file /etc/postfix/clean_outgoing_headers >> contains >> >> <snip> >> # drop mail application information >> /^X-Mailer:.*/ IGNORE >> /^User-Agent:.*/ IGNORE >> /^X-Enigmail-Version:.*/ IGNORE >> # drop all received stuff >> /^Received:.*/ IGNORE >> </snip> >> >> which additionally removes information about the MUA which may be used by >> an attacker to craft a targeted attack. >> >> Hth, >> Albrecht. > > >
