cache01.above.net has no MX records.
Question and response
Question
dig cache01.above.net. MX
Answer
The response has no answer records.
Authority
above.net. 600 SOA ns.above.net. hostmaster.above.net. 2025082500 3600 1800 604800 600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0