Question and response
Question
dig frcesc.com. MX
Answer
frcesc.com. 3600 MX 0 mx.frcesc.com.
Authority
The response has no authority records.
Additional
mx.frcesc.com. 3600 AAAA 2607:ff28:a005:8d:6d34:463a:65f6:4df7
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0