gatekeeper.tiavision.co.za has no MX records.
Question and response
Question
dig gatekeeper.tiavision.co.za. MX
Answer
The response has no answer records.
Authority
tiavision.co.za. 1800 SOA edna.ns.cloudflare.com. dns.cloudflare.com. 2394169316 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0