Domains with DNS TXT v=spf1 a mx include:protel.net include:sendgrid.net -all

There is 1 domain that have DNS TXT set to v=spf1 a mx include:protel.net include:sendgrid.net -all.

Top Domains with TXT set to v=spf1 a mx include:protel.net include:sendgrid.net -all