as28165.wcs.net.br has no MX records.
Question and response
Question
dig as28165.wcs.net.br. MX
Answer
The response has no answer records.
Authority
as28165.wcs.net.br. 900 SOA ns3.wcs.net.br. abuse.wcs.net.br. 2019041501 345600 900 604800 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0