From 0b2051e5b963d9b1d777f130072dad20e8ceeaad Mon Sep 17 00:00:00 2001 From: "root@culturestrings" Date: Tue, 14 May 2024 15:31:20 +0000 Subject: postfix: spam rejection: require valid A and PTR records. --- public/fs/etc/postfix/main.cf.in | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'public') diff --git a/public/fs/etc/postfix/main.cf.in b/public/fs/etc/postfix/main.cf.in index 60cf63d..4eb5e5d 100644 --- a/public/fs/etc/postfix/main.cf.in +++ b/public/fs/etc/postfix/main.cf.in @@ -72,6 +72,12 @@ smtpd_helo_restrictions = permit_mynetworks, reject_unknown_helo_hostname, reject_non_fqdn_helo_hostname +smtpd_sender_restrictions = permit_mynetworks, + permit_tls_all_clientcerts, + reject_unknown_reverse_client_hostname, + reject_unknown_client_hostname + + meta_directory = /usr/lib/postfix setgid_group = maildrop newaliases_path = /usr/bin/newaliases -- cgit v1.2.3