Domains with DNS TXT v=spf1 include:mxlogin.com include:sendgrid.net include:secureserver.net include:mail.zendesk.com -all
There is 1 domain that have DNS TXT set to v=spf1 include:mxlogin.com include:sendgrid.net include:secureserver.net include:mail.zendesk.com -all.