iptables and ufw

======== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.2
- Linux/BSD distribution name and version: Ubuntu 14.04
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Apache2
- Manage mail accounts with iRedAdmin-Pro? No
- Related log if you're reporting an issue: n/a
====

Hello Zhang.  I'm running iredmail and use Webmin to manage most simple tasks.  I'm setting up a firewall to allow extra ports as recommended in a couple of the iredmail upgrade options. 

It seems that after I started to configure iptables with Linux Firewall in Webmin I cannot now access the actual rules configuration files

Thanks in advance, Greg