Domains with DNS TXT v=spf1 include:_spf.google.com include:_spf.zdsys.com include:support.zendesk.com include:smtp.zendesk.com include:mailgun.org ~all
There are 2 domains that have DNS TXT set to v=spf1 include:_spf.google.com include:_spf.zdsys.com include:support.zendesk.com include:smtp.zendesk.com include:mailgun.org ~all. The top 2 records ordered by domain rank are listed below.