Domains with DNS TXT v=spf1 +a +mx +ip4:65.21.136.23 include:verticalresponse.com include:spfc50.megamailservers.com ~all
There is 1 domain that have DNS TXT set to v=spf1 +a +mx +ip4:65.21.136.23 include:verticalresponse.com include:spfc50.megamailservers.com ~all.