<SIZE> bytes, 1+3+0+0 records, response, noerror
query: MX another.unsigned.xx
answer: another.unsigned.xx 86400 CNAME an.example.xx
answer: an.example.xx 86400 CNAME tripple.xx
answer: an.example.xx 86400 RRSIG CNAME 7 3 86400 <TIME> <TIME> 44495 example.xx <SIG>
