www11.dns.net.za has no MX records.
Question and response
Question
dig www11.dns.net.za. MX
Answer
The response has no answer records.
Authority
dns.net.za. 30 SOA ns1.dnservices.co.za. support.dns.business. 2025022999 14400 3600 2419200 30
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0