Domains with DNS TXT v=spf1 a mx +include:spf.ax.email +include:optusnet.com.au +include:_spf.telstra.com.au -all
There is 1 domain that have DNS TXT set to v=spf1 a mx +include:spf.ax.email +include:optusnet.com.au +include:_spf.telstra.com.au -all.