Question and response
Question
dig net1.smtpcorp.com. TXT
Answer
net1.smtpcorp.com. 600 CNAME www.smtpcorp.com.
www.smtpcorp.com. 600 CNAME smtpadmin.smtpcorp.com.
smtpadmin.smtpcorp.com. 300 TXT "v=spf1 include:spf.smtp2go.com -all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0