Follow the steps listed below to configure your Microsoft Outlook Express to work with your email account:
Step 1: Open Outlook Express and click on the Tools menu. Select Accounts.
Step 2: Click Add account and select Mail.
Step 3: Enter your name as you would like it to appear in the From: field for the outgoing messages.
Step 4: Enter the email address which the others will use to send email messages to you.
Step 5: Incoming mail server (POP3/IMAP server): mail.yourdomainname.com
Outgoing mail server (SMTP server): mail.yourdomainname.com
Please, set the SMTP port to 25 or 2525.
Step 6: Username: please use the full e-mail account name. Example: email@example.com instead of you.
Step 7: Click Finish.
Now click once on the newly created account, and choose Properties. Go
to the Servers tab and select the My server requires authentication
Step 9: You are done!