mkt.allstream.com has no MX records.
Question and response
Question
dig mkt.allstream.com. MX
Answer
The response has no answer records.
Authority
allstream.com. 3600 SOA nsx.integraonline.com. itops.zayo.com. 2026011502 300 7200 604800 172800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0