Domains with DNS TXT v=spf1 a ptr a:email-smtp.us-east-1.amazonaws.com include:sendgrid.net include:spf.protection.outlook.com ~all
There is 1 domain that have DNS TXT set to v=spf1 a ptr a:email-smtp.us-east-1.amazonaws.com include:sendgrid.net include:spf.protection.outlook.com ~all.