My Postfix delivers to an IMAP store using LMTP. I intend to have known users only defined in IMAP server's LMTP config.
To check for valid users, and reject if not found, I use Postfix's (http://www.postfix.org/SASL_README.html) reject_sender_login_mismatch For simple config, I add that to /etc/postfix/main.cf: smtpd_recipient_restrictions = ... reject_sender_login_mismatch When I add, e.g., postscreen, spampd as a before queue content filter, and opendkim milter, should the 'reject_sender_login_mismatch' still be left in main.cf, available globally by default? Or should it be removed, and then added solely to a specific entry in master.cf? What's considered best practice in this case, and why? Barry
