Changing IP Address

==== Required information ====
- iRedMail version: 0.8.4
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Linux/BSD distribution name and version: Ubuntu 12.04
- Related log if you're reporting an issue:
====

Hi zhang,

I would like to change the IP address of my iRedMail server. (same subnet as the old IP).
Besides the /etc/network/interfaces, are there any other config files that should be edited for iRedMail to properly function?

Thanks!