ip21.net116.ipam.itbatera.euskadi.eus has no MX records.
Question and response
Question
dig ip21.net116.ipam.itbatera.euskadi.eus. MX
Answer
The response has no answer records.
Authority
ipam.itbatera.euskadi.eus. 3600 SOA ns1.itbatera.euskadi.eus. gestecdominios.ejie.eus. 2017115126 1200 300 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0