Allow incoming email traffic

firewall.nft

@@ -45,8 +45,8 @@ table inet filter {
     tcp flags & (fin|syn|rst|ack) != syn counter jump bad-new
     ip  saddr { noc6.vh.hbone.hu, noc7.vh.hbone.hu, gum.vh.hbone.hu, jujube.noc.einfra.hu } tcp dport { ssh, munin, nrpe } accept
     ip6 saddr { noc6.vh.hbone.hu, noc7.vh.hbone.hu, gum.vh.hbone.hu, jujube.noc.einfra.hu } tcp dport { ssh, munin, nrpe } accept
-    tcp dport { ssh, https } accept
-    tcp dport { auth, http, smtp } reject
+    tcp dport { ssh, https, smtp, submission } accept
+    tcp dport { auth, http } reject
     ip saddr baas-dir1.niif.hu tcp dport bacula-fd accept
     icmp type echo-request accept
   }