Domains with DNS TXT v=spf1 include:_spf.createsend.com include:relay.mailchannels.net include:spf.protection.outlook.com include:customer.mailguard.com.au -all
There is 1 domain that have DNS TXT set to v=spf1 include:_spf.createsend.com include:relay.mailchannels.net include:spf.protection.outlook.com include:customer.mailguard.com.au -all.