nssyd02.aumanaged.com has no MX records.
Question and response
Question
dig nssyd02.aumanaged.com. MX
Answer
The response has no answer records.
Authority
aumanaged.com. 100 SOA nssyd01.aumanaged.com. alerts.crucialparadigm.com. 2026022600 4800 300 1209600 100
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0