Question and response
Question
dig extmail.bigpond.com. TXT
Answer
extmail.bigpond.com. 10800 TXT "v=spf1 include:bigpond.com ~all"
Authority
extmail.bigpond.com. 500 NS cladnsf5.bigpond.com.
extmail.bigpond.com. 500 NS exhdnsf5.bigpond.com.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0