Question and response
Question
dig mxfallback.spamfilterserver.com. AAAA
Answer
mxfallback.spamfilterserver.com. 300 AAAA 2a02:cc9:0:63:0:0:0:213
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1400, xrcode 0, version 0, flags 0