SpamTitan Cloud is comprised of three different server clusters, one of which you will be using.  The easiest way to determine which cluster you are using is to examine the MX records for your domain.  You can check your MX record using MXToolBox.


Your MX records will contain either:


cloud1.spamtitan.com

cloud2.spamtitan.com

OR

cloud3.spamtitan.com

cloud4.spamtitan.com

OR

cloud5.spamtitan.com

cloud6.spamtitan.com



The IP address ranges for the different clusters are:


cloud1.spamtitan.com & cloud2.spamtitan.com

  • 96.127.141.203
  • 198.20.73.147
  • 198.20.89.94


cloud3.spamtitan.com & cloud4.spamtitan.com

  • 107.6.152.251
  • 108.178.61.211



cloud6.spamtitan.com & cloud6.spamtitan.com

  • 52.10.98.167
  • 52.26.55.167
  • 52.32.254.113