gw has no MX records.
Question and response
Question
dig gw. MX
Answer
The response has no answer records.
Authority
gw. 300 SOA gw01.dns.pt. info.nic.gw. 2026022501 21600 7200 2592000 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0