megamail.dsl.net has no MX records.
Question and response
Question
dig megamail.dsl.net. MX
Answer
The response has no answer records.
Authority
dsl.net. 300 SOA ns1.megapath.net. support.megapath.net. 1443903699 14400 3600 2718281828 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0