wcom.com has no MX records.
Question and response
Question
dig wcom.com. MX
Answer
The response has no answer records.
Authority
wcom.com. 960 SOA omzdns9.verizon.com. hostmaster.mci.com. 1225 1920 960 604800 960
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0