corpfw.lh.net has no MX records.
Question and response
Question
dig corpfw.lh.net. MX
Answer
The response has no answer records.
Authority
lh.net. 30 SOA ns1.lh.net. hostmaster.lh.net. 2026021600 10800 1800 10800 30
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0