rspamdcorp.idm.net.lb has no MX records.
Question and response
Question
dig rspamdcorp.idm.net.lb. MX
Answer
The response has no answer records.
Authority
idm.net.lb. 3600 SOA ns0.idm.net.lb. ns0.idm.net.lb. 2026022601 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0