Only getting e-mail after rebooting server

==== Required information ====
- iRedMail version: 0.8.5
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):  PGSQL
- Linux/BSD distribution name and version: Ubuntu LAMP 12.04 on Digital Ocean
- Related log if you're reporting an issue: Not sure what Log file I should paste.
====

Hi,
So I followed this guide (http://www.iredmail.org/install_iredmail_on_ubuntu.html) and set up iRedMail 0.8.5 on my Droplet (12.04 LAMP Ubuntu), my hostname was MYDOMAIN.com and I used mail.MYDOMAIN.com as my first Virtual Domain Name. Using PostgreSQL.

For some reason it is not sending or receiving any e-mails until I "Reboot"

Thanks for your assistance.