From the home screen, tap the Menu key.
Scroll to and tap Accounts & Sync.
Tap Add Account.
Enter the username and password and tap Next.
Enter the correct Domain\Username.
Re-enter the account Password.
Enter the Exchange server address in the Server field.
Tap to check or uncheck the SSL settings as required by the email provider.
Set the Account Options as desired, and then tap Next.
Enter the desired account name, then tap Done.
The Microsoft Exchange ActiveSync account is set up successfully.