Go to Tools
Enter your display name
Enter your email address
Choose POP3 or IMAP from the list
Enter mail. followed by your domain name for both the Incoming mail server (POP3 or IMAP) and the Outgoing (SMTP) mail server. For example if your domain name was example.com, you would enter mail.example.com.
For the Account name enter your full email address.
In the password field enter the password for this email address.
Make sure the Log on using Secure Password Authentication (SPA) box is blank.
Click on the email address you have just setup and click on Properties.
Go to the Servers tab
Under the ‘Outgoing Mail Server’ section, make sure ‘My server requires authentication’ is ticked.
Go to the Advanced tab
Change the Outgoing mail (SMTP) port number from 25 to 587