How to configure postfix to force From: field but leave Reply-To: alone
Solution 1:
Forcing the from address when postfix relays over smtp
/etc/postfix/main.cf:
smtp_header_checks = regexp:/etc/postfix/header_check
/etc/postfix/header_check:
/From:.*/ REPLACE From: [email protected]
Tested with:
mail -s test -a 'Reply-To: [email protected]' [email protected] <<< test
Header on client side:
From: [email protected]
Reply-To: [email protected]
To: <[email protected]>
In syslog you then see
Nov 1 17:20:50 huuu postfix/smtp[4716]: 1B65481FAB18: replace: header From: root@huuu (root): From: [email protected]