1. Log in to your HostGator cPanel account.  
  2. In the Mail section, click MX Entry.
  3. If you have more than one domain, select the domain you're using with SpamTitan—look for this under the Domain heading.  
  4. Under Email Routing, select Remote Mail Exchanger.
  5. Click the Change button.  
  6. In the Add New Record section, include the following MX record values: cloud7.spamtitan.com ; cloud8.spamtitan.com.