From 80e1fed0cca18d699aae6cb607e00d53cff4dcd6 Mon Sep 17 00:00:00 2001 From: Naglfar Date: Sun, 2 Jan 2022 09:16:39 +0100 Subject: [PATCH] Reject IP with no RDNS --- roles/shell/files/etc/postfix/main.cf | 1 + 1 file changed, 1 insertion(+) diff --git a/roles/shell/files/etc/postfix/main.cf b/roles/shell/files/etc/postfix/main.cf index 83ca36c..00c20b3 100644 --- a/roles/shell/files/etc/postfix/main.cf +++ b/roles/shell/files/etc/postfix/main.cf @@ -67,6 +67,7 @@ smtpd_recipient_restrictions = reject_non_fqdn_recipient, reject_unknown_sender_domain, reject_unknown_recipient_domain, + reject_unknown_reverse_client_hostname, check_policy_service unix:private/policyd-spf, reject_rbl_client bl.fmb.la=127.0.1.[24;25;26;27;28], reject_rbl_client spam.dnsbl.anonmails.de,