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.
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