diff --git a/version/0.3.3/INSTALL.sh b/version/0.3.3/INSTALL.sh
index 40f27c81..dd5e04b0 100644
--- a/version/0.3.3/INSTALL.sh
+++ b/version/0.3.3/INSTALL.sh
@@ -966,6 +966,7 @@ setup_firewall_service() {
           install_csf
           edit_csf_conf
           open_tcpout_csf 3306 #mysql tcp_out only
+	  pen_tcpout_csf 465 #for emails
           open_port_csf 22 #ssh
           open_port_csf 53 #dns
           open_port_csf 80 #http