lrn1.piratel.com has no MX records.
Question and response
Question
dig lrn1.piratel.com. MX
Answer
The response has no answer records.
Authority
piratel.com. 1800 SOA martin.ns.cloudflare.com. dns.cloudflare.com. 2396786801 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0