Tap on Mail, Contacts, Calendars,
then tap on Add Account.
Tap on Other,
then tap on Add Mail Account
Fill out your basic information, and hit Next
Put in
mail.[your domain name].com
for the Host Name,
and your e-mail address
as the username
Once set up, tap on Advanced
Make sure SSL is turned off,
and Server Port is 110
Tap on SMTP
Make sure SSL is turned off,
and Server Port is set to 7625