crisp-ens.com has no MX records.
Question and response
Question
dig crisp-ens.com. MX
Answer
The response has no answer records.
Authority
crisp-ens.com. 900 SOA mgoextdns1.genmills.com. dom\.admin.genmills.com. 18 10800 3600 2419200 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0