Question and response
Question
dig inmx.imdlv.net. TXT
Answer
inmx.imdlv.net. 3600 TXT "v=spf1 include:_spf.imdlv.net -all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0