Add support for additional SMTP ports OUT.

conf/main_ipv4.conf.sample

@@ -837,6 +837,13 @@ mail_user_ports="$standard_mailuser_ports"
 mail_smtp_port="$standard_smtp_port"
 
 
+# Additional Ports for outgoing smtp traffic
+#
+# comma separated list of ports
+#
+smtpd_additional_outgoung_ports=""
+
+
 # ======
 # - FTP Service
 # ======

conf/main_ipv6.conf.sample

@@ -809,6 +809,13 @@ mail_user_ports="$standard_mailuser_ports"
 mail_smtp_port="$standard_smtp_port"
 
 
+# Additional Ports for outgoing smtp traffic
+#
+# comma separated list of ports
+#
+smtpd_additional_outgoung_ports=""
+
+
 # ======
 # - FTP Service
 # ======

conf/post_decalrations.conf

@@ -727,6 +727,27 @@ done
 IFS="$CUR_IFS"
 
 
+# ---
+# Additional SMTP Outgoing Ports
+# ---
+declare -a smtpd_additional_outgoung_port_arr=()
+CUR_IFS="$IFS"
+IFS=',' ; for _port in $smtpd_additional_outgoung_ports ; do
+
+   if containsElement "${_port}" "${out_tcp_port_arr[@]}" ; then
+      continue
+   fi
+
+   smtpd_additional_outgoung_port_arr+=("${_port}")
+
+   if $allow_mail_request_out ; then
+      out_tcp_port_arr+=("$_port")
+   fi
+
+done
+IFS="$CUR_IFS"
+
+
 
 # ---
 # - FTP out only

ip6t-firewall-gateway

@@ -2630,6 +2630,29 @@ else
 fi
 
 
+# ---
+# - Mail (additional smtp ports OUT)
+# ---
+
+echononl "\t\tMail (additional smtp ports OUT)"
+
+if [[ ${#smtpd_additional_outgoung_port_arr[@]} -gt 0 ]] ; then
+
+   for _port in ${smtpd_additional_outgoung_port_arr[@]} ; do
+      for _dev in ${ext_if_arr[@]} ; do
+         $ip6t -A OUTPUT -o $_dev -p tcp --dport $_port -m state --state NEW -j ACCEPT
+         if $kernel_forward_between_interfaces ; then
+            $ip6t -A FORWARD -o $_dev -p tcp --dport $_port -m state --state NEW -j ACCEPT
+         fi
+      done
+   done
+
+   echo_done
+else
+   echo_skipped
+fi
+
+
 # ---
 # - SMTP (Relay) Service Gateway
 # ---

ipt-firewall-gateway

@@ -3402,6 +3402,29 @@ else
 fi
 
 
+# ---
+# - Mail (additional smtp ports OUT)
+# ---
+
+echononl "\t\tMail (additional smtp ports OUT)"
+
+if [[ ${#smtpd_additional_outgoung_port_arr[@]} -gt 0 ]] ; then
+
+   for _port in ${smtpd_additional_outgoung_port_arr[@]} ; do
+      for _dev in ${ext_if_arr[@]} ; do
+         $ipt -A OUTPUT -o $_dev -p tcp --dport $_port -m state --state NEW -j ACCEPT
+         if $kernel_activate_forwarding ; then
+            $ipt -A FORWARD -o $_dev -p tcp --dport $_port -m state --state NEW -j ACCEPT
+         fi
+      done
+   done
+
+   echo_done
+else
+   echo_skipped
+fi
+
+
 # ---
 # - SMTP (Relay) Service Gateway
 # ---