Domains with DNS TXT v=spf1 a mx include:_spf.google.com include:_spf.rdstation.com.br include:sendgrid.net ~all
There are 21 domains that have DNS TXT set to v=spf1 a mx include:_spf.google.com include:_spf.rdstation.com.br include:sendgrid.net ~all. The top 21 records ordered by domain rank are listed below.