cp013.servidoresph.com has no MX records.
Question and response
Question
dig cp013.servidoresph.com. MX
Answer
The response has no answer records.
Authority
servidoresph.com. 1800 SOA andy.ns.cloudflare.com. dns.cloudflare.com. 2397633694 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0