Add a strong restriction on non-existent senders

8 years ago · a7380f6832
parent 17d844f647
commit a7380f6832
1 changed files with 1 additions and 0 deletions
--- a/postfix/conf/main.cf
+++ b/postfix/conf/main.cf
@ -105,6 +105,7 @@ smtpd_sender_restrictions =
   permit_mynetworks,
   reject_non_fqdn_sender,
   reject_unknown_sender_domain,
+   reject_unlisted_sender,
   reject_sender_login_mismatch,
   permit