ns.ie has no MX records.
Question and response
Question
dig ns.ie. MX
Answer
The response has no answer records.
Authority
ns.ie. 3600 SOA a.ns.ie. noc.weare.ie. 2026022502 14400 3600 2600000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0