ssl.joqr.net has no MX records.
Question and response
Question
dig ssl.joqr.net. MX
Answer
The response has no answer records.
Authority
joqr.net. 600 SOA nsx1.mitene.ad.jp. postmaster.po.mitene.or.jp. 100076 7200 1800 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0