Question and response
Question
dig mail15544.emails.markerstudy.com. TXT
Answer
mail15544.emails.markerstudy.com. 3600 TXT "v=spf1 ip4:129.41.77.70 ip4:129.41.167.2 -all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0