Domains with DNS TXT v=spf1 ip4:58.162.220.16 include:spf.protection.outlook.com include:customer.mailguard.com.au -all
There is 1 domain that have DNS TXT set to v=spf1 ip4:58.162.220.16 include:spf.protection.outlook.com include:customer.mailguard.com.au -all.