correo.nextnet.com.pe has no MX records.
Question and response
Question
dig correo.nextnet.com.pe. MX
Answer
The response has no answer records.
Authority
nextnet.com.pe. 3600 SOA ns1.nextnet.com.pe. hostmaster.nextnet.com.pe. 2026021401 3600 3600 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0