Question and response
Question
dig rrgst.com. MX
Answer
rrgst.com. 3600 MX 0 mx.rrgst.com.
Authority
The response has no authority records.
Additional
mx.rrgst.com. 3600 A 5.39.44.134
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0