choique.itcsa.net.ar has no MX records.
Question and response
Question
dig choique.itcsa.net.ar. MX
Answer
The response has no answer records.
Authority
itcsa.net.ar. 3600 SOA choique.itcsa.net.ar. admin.itcsa.net.ar. 2005060534 3600 600 1604800 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0