mta2.epik.com has no MX records.
Question and response
Question
dig mta2.epik.com. MX
Answer
The response has no answer records.
Authority
epik.com. 1800 SOA alberto.ns.cloudflare.com. dns.cloudflare.com. 2397113900 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0