ns4.masnet.hn has no MX records.
Question and response
Question
dig ns4.masnet.hn. MX
Answer
The response has no answer records.
Authority
masnet.hn. 1800 SOA ns1.masnet.hn. postmaster.masnet.hn. 2003060302 28800 7200 604800 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0