Step 1
Select the name of your account from the left-hand menu, then click on the 'Accounts' tab.
Click on the 'Properties' button. If you do not have any accounts setup, click on the 'Email' button.
Step 2
Enter your email address into the E-mail address field.
Click on the 'Servers' tab.
Step 3
Change the Outgoing mail (SMTP) setting to mail.yourdomain.com.
Make sure that the setting 'My server requires authentication' is enabled, then click 'Settings...'
Important: do *not* change your Incoming mail server setting.
Step 4
Select Log on using, then enter your SMTP Username into Account name, and your SMTP Password into Password.
Make sure that Remember password is enabled and Log on using Secure Password Authentication is disabled.
Click 'OK'.
Step 5
Click the 'Advanced' tab.
Change your Outgoing mail (SMTP) Port Number to 465. You can also try using Port Number 26.
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Standard Settings:
Incoming email server : mail.yourdomain.com
Outgoing email STMP server : mail.yourdomain.com
Incoming email port : 110 for POP3 and 143 for IMAP
Outgoing email port : 587, 26
