srv.ciudadelaparc.com has no MX records.
Question and response
Question
dig srv.ciudadelaparc.com. MX
Answer
The response has no answer records.
Authority
ciudadelaparc.com. 10800 SOA ns9.nsprimario.com. dns.nsprimario.com. 1771847282 10800 3600 604800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0