optele.net has no MX records.
Question and response
Question
dig optele.net. MX
Answer
The response has no answer records.
Authority
optele.net. 3600 SOA temmdns1.optele.net. root.temmdns1.optele.net. 2023051607 7200 3600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0