ns1.dmz.inxmail.de.inxserver.com has no SRV records.
Question and response
Question
dig ns1.dmz.inxmail.de.inxserver.com. SRV
Answer
The response has no answer records.
Authority
inxserver.com. 3600 SOA ns1.dmz.inxmail.de.inxserver.com. hostmaster.inxmail.de. 2026022301 3600 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0