oldweb.comendosystems.com has no MX records.
Question and response
Question
dig oldweb.comendosystems.com. MX
Answer
The response has no answer records.
Authority
comendosystems.com. 3600 SOA ns1.electric.net. dns.electric.net. 1518430169 10000 1800 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0