On Tue, Aug 06, 2024 at 05:45:59PM -0400, Wietse Venema via Postfix-users wrote: > Laura Smith via Postfix-users: > [...] > > Here's what I've done: > > > > 1/ Create header_checks file with the following: > > /^Received:/ IGNORE > > /^User-Agent:/ IGNORE > > /^X-Mailer:/ IGNORE > > /^X-User-Agent:/ IGNORE > > [...] > > -o cleanup_service_name=myheadercleanup > > You may want to check that with > > postmulti -i postfix-myrelay -x postconf -P header_checks
Indeed, but I would also recommend to not entirely delete the Received headers, rather censor just the IP address or other "private" fields. Some receiving MTAs treat absence of origin Received headers as a sign of plausible email abuse. -- Viktor. _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org