cl1.ms.cynderhost.com has no MX records.
Question and response
Question
dig cl1.ms.cynderhost.com. MX
Answer
The response has no answer records.
Authority
cynderhost.com. 900 SOA kiki.bunny.net. hostmaster.bunny.net. 2021676827 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0