Step.II.On the Internet Accounts dialog box select the Mail account
and click on Properties .
Step III. Enter incoming and outgoing mail servers as mail.mydomain.com.
Enter your username and password, then click OK.
Note: Replace mydomain in this example with your actual domain name [e.g.:
if your domain name is carbiz.com then it will be mail.carbiz.com]
and user with actual user name. Related articles