Domains with DNS TXT v=spf1 a mx include:spf.braintreegateway.com include:spf.mandrillapp.com include:sendgrid.net include:mailgun.org -all
There is 1 domain that have DNS TXT set to v=spf1 a mx include:spf.braintreegateway.com include:spf.mandrillapp.com include:sendgrid.net include:mailgun.org -all.