DNS Data
Domains with DNS TXT v=spf1 mx mx:smtp.secureserver.net mx:mailstore1.secureserver.net include:secureserver.net -all
There are 350 domains that have DNS TXT set to v=spf1 mx mx:smtp.secureserver.net mx:mailstore1.secureserver.net include:secureserver.net -all. The top 50 records ordered by domain rank are listed below.