whatsmydns.net - DNS Propagation Checker
ALL A AAAA CAA CNAME MX NS PTR SOA SRV TXT ANY

No ANY records found for c1001.mx.srv.dfn.de.

Try mx.srv.dfn.de instead?

id 27261, opcode QUERY, rcode REFUSED, flags QR RD RA
;QUESTION
c1001.mx.srv.dfn.de. IN ANY
;ANSWER
;AUTHORITY
;ADDITIONAL

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