Domains with DNS TXT v=spf1 include:sparkpostmail.com include:support.zendesk.com include:smtp.zendesk.com include:_spf.google.com -all
There is 1 domain that have DNS TXT set to v=spf1 include:sparkpostmail.com include:support.zendesk.com include:smtp.zendesk.com include:_spf.google.com -all.