Domains with DNS TXT v=spf1 a a:cuda.backbonesystems.ca include:_spf.google.com include:spf.constantcontact.com ~all

There is 1 domain that have DNS TXT set to v=spf1 a a:cuda.backbonesystems.ca include:_spf.google.com include:spf.constantcontact.com ~all.

Top Domains with TXT set to v=spf1 a a:cuda.backbonesystems.ca include:_spf.google.com include:spf.constantcontact.com ~all