Domains with DNS TXT v=spf1 a mx ptr include: spf.safesecureweb.com include:sendgrid.net include:mailgun.org include:relay.mailchannels.net ~all
There is 1 domain that have DNS TXT set to v=spf1 a mx ptr include: spf.safesecureweb.com include:sendgrid.net include:mailgun.org include:relay.mailchannels.net ~all.