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