173-217-178-28-alex.mid.dyn.suddenlink.net has no MX records.
Question and response
Question
dig 173-217-178-28-alex.mid.dyn.suddenlink.net. MX
Answer
The response has no answer records.
Authority
mid.dyn.suddenlink.net. 7200 SOA authns1.alticeusa.net. abuse.alticeusa.com.mid.dyn.suddenlink.net. 2014012302 7200 1800 1209600 7200
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0