stimulus.nc.gov has no MX records.
Question and response
Question
dig stimulus.nc.gov. MX
Answer
The response has no answer records.
Authority
nc.gov. 900 SOA ns1.nc.gov. hostmaster.its.nc.gov. 2011056872 10800 3600 2419200 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0