spf.postal.ecs-ops.net.za has no MX records.
Question and response
Question
dig spf.postal.ecs-ops.net.za. MX
Answer
The response has no answer records.
Authority
ecs-ops.net.za. 3600 SOA pns101.cloudns.net. support.cloudns.net. 2026010604 7200 1800 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0