out3.unitymedia.info has no MX records.
Question and response
Question
dig out3.unitymedia.info. MX
Answer
The response has no answer records.
Authority
unitymedia.info. 7200 SOA ns1.vodafone-ip.de. hostmaster.adm.arcor.net. 2023012401 28800 9600 1814400 7200
Additional
. 0 OPT ; payload 1460, xrcode 0, version 0, flags 0