Domains with DNS TXT v=spf1 +a +mx +ip4:173.254.29.237 +ip4:173.254.28.25 +mx:mail.onpurpose.uk.com +include:_spf.salesforce.com ~all

There is 1 domain that have DNS TXT set to v=spf1 +a +mx +ip4:173.254.29.237 +ip4:173.254.28.25 +mx:mail.onpurpose.uk.com +include:_spf.salesforce.com ~all.

Top Domains with TXT set to v=spf1 +a +mx +ip4:173.254.29.237 +ip4:173.254.28.25 +mx:mail.onpurpose.uk.com +include:_spf.salesforce.com ~all