merlin.blacknight.ie has no MX records.
Question and response
Question
dig merlin.blacknight.ie. MX
Answer
The response has no answer records.
Authority
blacknight.ie. 900 SOA ns.blacknightsolutions.com. sales.blacknight.ie. 2026022729 10800 3600 604800 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0