Domains with DNS TXT v=spf1 mx include:spf.protection.outlook.com include:sendgrid.net include:relay.mailchannels.net ~all
There are 16 domains that have DNS TXT set to v=spf1 mx include:spf.protection.outlook.com include:sendgrid.net include:relay.mailchannels.net ~all. The top 16 records ordered by domain rank are listed below.