diff --git a/fail2ban/jail.d/mailsrv.conf b/fail2ban/jail.d/mailsrv.conf
index b01865e..4dcd01e 100644
--- a/fail2ban/jail.d/mailsrv.conf
+++ b/fail2ban/jail.d/mailsrv.conf
@@ -1,9 +1,8 @@
 [mailsrv-postfix]
 enabled  = true
 filter   = postfix[mode=extra]
-action   = iptables[name=mailsrv, port="smtp,submission,pop3,imap", protocol=tcp]
-backend  = polling
-logpath  = /srv/vol/mailsrv/log/mail.log
+action   = iptables-multiport[name=mailsrv, port="smtp,submission,pop3,imap", protocol=tcp, chain=FORWARD]
+logpath  = /srv/vol/mailsrv/log/mail.warn
 bantime  = 24h
 findtime = 10m
 maxretry = 3