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