ns3.telkom.co.za has no MX records.
Question and response
Question
dig ns3.telkom.co.za. MX
Answer
The response has no answer records.
Authority
telkom.co.za. 2674 SOA ns2.telkom.co.za. dnsadmin.telkom.co.za. 20018535 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0