p11.synatix.de has no MX records.
Question and response
Question
dig p11.synatix.de. MX
Answer
The response has no answer records.
Authority
synatix.de. 86400 SOA ns1.domainers.de. hostmaster.internetwire.de. 2025102301 3600 7200 604800 86400
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0