Domains with DNS TXT v=spf1 +a +mx include:spf.protection.outlook.com include:customer.mailguard.com.au include:au.zcsend.net ~all
There is 1 domain that have DNS TXT set to v=spf1 +a +mx include:spf.protection.outlook.com include:customer.mailguard.com.au include:au.zcsend.net ~all.