smtp1.mail.atosorigin.com has no MX records.
Question and response
Question
dig smtp1.mail.atosorigin.com. MX
Answer
The response has no answer records.
Authority
atosorigin.com. 900 SOA ns1.atos-services.net. ipam.atos.net. 2016062444 900 600 2419200 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0