temmdns4.optele.net has no MX records.
Question and response
Question
dig temmdns4.optele.net. MX
Answer
The response has no answer records.
Authority
optele.net. 3600 SOA temmdns1.optele.net. root.temmdns1.optele.net. 2023051606 10800 3600 604800 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0