us2-mail.concursolutions.com has no MX records.
Question and response
Question
dig us2-mail.concursolutions.com. MX
Answer
The response has no answer records.
Authority
concursolutions.com. 300 SOA ns0.concur.net. eoperator.concur.com. 2019082630 10800 3600 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0