edu to umich.edu: No valid RRSIGs made by a key corresponding to a DS RR were found covering the DNSKEY RRset, resulting in no secure entry point (SEP) into the zone. (2400:cb00:2049:1::a29f:3005, UDP_-_NOEDNS_)
edu to umich.edu: The DS RRset for the zone included algorithm 13 (ECDSAP256SHA256), but no DS RR matched a DNSKEY with algorithm 13 that signs the zone's DNSKEY RRset. (2400:cb00:2049:1::a29f:3005, UDP_-_NOEDNS_)
umich.edu/DNSKEY (alg 13, id 28641): DNSSEC was effectively downgraded because the response had an invalid RCODE (SERVFAIL) with EDNS enabled. (2400:cb00:2049:1::a29f:3005, UDP_-_NOEDNS_)
umich.edu/DNSKEY (alg 13, id 28641): The DNSSEC records necessary to validate the response could not be retrieved from the server. (2400:cb00:2049:1::a29f:3005, UDP_-_EDNS0_4096_D_KN)
umich.edu/DNSKEY (alg 13, id 28641): The response had an invalid RCODE (SERVFAIL) until EDNS was disabled (however, this server appeared to respond legitimately to other queries with EDNS enabled). (2400:cb00:2049:1::a29f:3005, UDP_-_EDNS0_4096_D_KN)
umich.edu/DNSKEY (alg 13, id 58714): DNSSEC was effectively downgraded because the response had an invalid RCODE (SERVFAIL) with EDNS enabled. (2400:cb00:2049:1::a29f:3005, UDP_-_NOEDNS_)
umich.edu/DNSKEY (alg 13, id 58714): The DNSSEC records necessary to validate the response could not be retrieved from the server. (2400:cb00:2049:1::a29f:3005, UDP_-_EDNS0_4096_D_KN)
umich.edu/DNSKEY (alg 13, id 58714): The response had an invalid RCODE (SERVFAIL) until EDNS was disabled (however, this server appeared to respond legitimately to other queries with EDNS enabled). (2400:cb00:2049:1::a29f:3005, UDP_-_EDNS0_4096_D_KN)
Warnings (1)
edu to umich.edu: The following NS name(s) were found in the delegation NS RRset (i.e., in the edu zone), but not in the authoritative NS RRset: umich-edu.dns.umich.org