Click on the Setting application
Click on: the Mail, Contacts, Calendars option
Click on: Add Account
Click on: Other
Click on: Add Mail Account

Enter:

  your name in the Name field
  your email address in the address field (use all lower case)
  your password in the password file 
  a description of this account in the Description field

Click on: Next (top right)

Make sure IMAP is selected at the top.

Center the following information:

Incoming Mail Server
  Host Name: mail.firehawksystems.com
  User Name: [ your email address, all lower case] 
   Password: [ your password ]

Outgoing Mail Server:
  Host Name: mail.firehawksystems.com
  User Name: [ your email address, all lower case ]
   Password: [ your password ]


Click on: Next (top right)

After verifying is done, click save (top right)