localhost.epix.net has no MX records.
Question and response
Question
dig localhost.epix.net. MX
Answer
The response has no answer records.
Authority
epix.net. 86400 SOA localhost.epix.net. hostmaster.epix.net. 2512170002 900 3600 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0