Setting Up iPhone Mail.
1. Go to 'Settings' -> 'Mail,Contact, Calendars' -> 'Add Account..'

2. Select POP. Key in your name, email address and description of this account.

Under 'Incoming Mail Server', note the following fields:

'Host Name' : You can find this information in the Account Information that we sent to you. It is usually 'mail.yourdomain.com'
'User Name': This is your email address (eg 'john@yourcompany.com').
'Password': the password you set when setting up this email account on our server


3. Our Outgoing Mail Server requires authentication.

Please note the following fields:

'Host Name': You can find this information in the Account Information that we sent to you. It is usually 'smtp.yourdomain.com'
'User Name': This is your email address (eg 'john@yourcompany.com')
'Password': same as the password you set for 'Incoming Mail Server' above.

Click Save.

4. You will get this prompt message, please kindly select "No"

5. Save all the email configuration

6. This is optional :

If the email still not working. Please go to 'Settings' -> 'Mail,Contact, Calendars'-> Click on your email.
Choose 'Advanced', make it sure all the settings are same with below :

7. This is the SMTP settings. If your email still can't send out. Please kindly fllow this settings carefully.