Domains with DNS TXT v=spf1 ip4:103.26.236.159 include:customer.mailguard.com.au include:relay.mailchannels.net -all
There is 1 domain that have DNS TXT set to v=spf1 ip4:103.26.236.159 include:customer.mailguard.com.au include:relay.mailchannels.net -all.