mail.vrtelecom.es has no MX records.
Question and response
Question
dig mail.vrtelecom.es. MX
Answer
The response has no answer records.
Authority
vrtelecom.es. 1500 SOA ns.vrtelecom.es. hostmaster.vrtelecom.es. 2025112301 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0