Domains with DNS TXT v=spf1 include:sendgrid.net include:_spf.google.com include:mail.zendesk.com include:mailgun.org include:_spf.salesforce.com -all
There are 21 domains that have DNS TXT set to v=spf1 include:sendgrid.net include:_spf.google.com include:mail.zendesk.com include:mailgun.org include:_spf.salesforce.com -all. The top 21 records ordered by domain rank are listed below.