==== Required information ====
- iRedMail version: 0.8.6
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL/MariaDB
- Linux/BSD distribution name and version: Red Hat Enterprise Linux Server 6.5 x86
- Related log if you're reporting an issue:
====

For those that have had a hard time installing iRedMail under RHEL 6.5, here are the additional release channels I had to turn on in order to get everything to install right:

* RHEL Server Optional (v. 6 for 32-bit x86)
* RHEL Server Supplementary (v. 6 for 32-bit x86)
* Red Hat Common (for RHEL 6 Server x86)

Once these were turned on, the installer seemed to have starting working without erroring out on the PHP module install.