I am using postfix + dovecot(imap+pop3) + mysql
I whant to explicity define users or groups that can send email on behalf of others
I was thinking doing this way:
for all local(mysql) authenticated users filter outgoing mail:
filter all mail by headers Return-Path/X-Original-To/From: field must matche authenticated user that sends it, otherwise bounce the email
Any ideas how to do this?
Best Answer
You can use smtpd_sender_login_maps and reject_authenticated_sender_login_mismatch in smtpd_sender_restrictions to restrict which MAIL FROM addresses logged in users can use. For example:
main.cf:
/etc/postfix/sender_login_maps:
Don't forget to run postmap: