To set up iPhone for POP, do the following...

Quick notes as you follow the image steps below, Enter the following information in the fields provided:
    o Username—Enter your entire email address (e.g., myname@mydomain.com).
    o Password—Enter the password associated with your email account.
    o POP server—Enter the server name: mail.mydomain.com
    o Port—Enter the non-secure port number: 110
    o Security type—Select NON-SSL.

Note: Be sure the Port number is still 110.

Tap the Next button. The device will connect to the internet and check your incoming settings.
On the Outgoing server settings screen, enter the following information in the fields provided:
    o SMTP server—Enter the server name: mail.mydomain.com
    o Port—Enter the port number: 825
    o Security type—Select NON-SSL.

Note: Be sure the Port number is still 825.