Domains with DNS TXT v=sp1 a mx ptr include:spf.constantcontact.com include:_netblocks.mimecast.com~all

There is 1 domain that have DNS TXT set to v=sp1 a mx ptr include:spf.constantcontact.com include:_netblocks.mimecast.com~all.

Top Domains with TXT set to v=sp1 a mx ptr include:spf.constantcontact.com include:_netblocks.mimecast.com~all