ger18-4.wwwserver.net has no MX records.
Question and response
Question
dig ger18-4.wwwserver.net. MX
Answer
The response has no answer records.
Authority
wwwserver.net. 600 SOA ns1.is-fun.net. hostmaster.is-fun.com. 2026012702 86400 7200 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0