dial-b3-4-13.telepac.pt has no MX records.
Question and response
Question
dig dial-b3-4-13.telepac.pt. MX
Answer
The response has no answer records.
Authority
telepac.pt. 1800 SOA dnscoi1aut01.local. dnsadmin.mail.telepac.pt. 2023581765 600 7200 604800 1800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0