wv.frontiernet.net has no MX records.
Question and response
Question
dig wv.frontiernet.net. MX
Answer
The response has no answer records.
Authority
wv.frontiernet.net. 21600 SOA auth.roch.ny.frontiernet.net. hostmaster.frontiernet.net. 2602090004 10800 3600 604800 21600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0