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