mxtls.expurgate.de has no MX records.
Question and response
Question
dig mxtls.expurgate.de. MX
Answer
The response has no answer records.
Authority
expurgate.de. 300 SOA ns1.expurgate.net. admin.expurgate.net. 2026022303 3600 900 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0