services.oktawave.com has no MX records.
Question and response
Question
dig services.oktawave.com. MX
Answer
The response has no answer records.
Authority
services.oktawave.com. 86400 SOA ns1.oktawave.com. hostmaster.oktawave.com. 2021033100 28800 7200 345600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0