104.124.1.41
a104-124-1-41.deploy.static.akamaitechnologies.com
104.124.1.81
a104-124-1-81.deploy.static.akamaitechnologies.com

2600:1409:3800::6862:7640
2600:1409:3800::6862:7669

mx1.smartmail.dealer.com.
mx3.smartmail.dealer.com.
spamblock.dealer.com.