a.mx.interacesso.pt has no CNAME records.
Question and response
Question
dig a.mx.interacesso.pt. NS
Answer
The response has no answer records.
Authority
interacesso.pt. 387 SOA dns.nortenet.pt. alves.nortenet.pt. 2025100602 10800 7200 1209600 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0