dns.brownwolf.me has no MX records.
Question and response
Question
dig dns.brownwolf.me. MX
Answer
The response has no answer records.
Authority
brownwolf.me. 3600 SOA dns.brownwolf.me. hostmaster.brownwolf.me. 1273240762 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0