Domains with DNS TXT v=spf1 mx include:spf1.web.com include:sendgrid.net include:mailgun.org include:emailsrvr.com -all
There is 1 domain that have DNS TXT set to v=spf1 mx include:spf1.web.com include:sendgrid.net include:mailgun.org include:emailsrvr.com -all.