Question and response
Question
dig spf.epmailer.net. NS
Answer
spf.epmailer.net. 3 CNAME epmailer.net.
Authority
epmailer.net. 3 SOA dns.epmailer.net. hostmaster.epmailer.net. 1326974595 43200 3600 604800 3601
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0