forward.suempresa.com has no MX records.
Question and response
Question
dig forward.suempresa.com. MX
Answer
The response has no answer records.
Authority
suempresa.com. 1800 SOA maya.ns.cloudflare.com. dns.cloudflare.com. 2395206938 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0