com to mach2plus.com: 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. See RFC 4035, Sec. 2.2, RFC 6840, Sec. 5.11.
mach2plus.com zone: The server(s) responded over TCP with a malformed response or with an invalid RCODE. See RFC 1035, Sec. 4.1.1. (172.64.52.73, 172.64.53.117)
mach2plus.com zone: The server(s) responded over UDP with a malformed response or with an invalid RCODE. See RFC 1035, Sec. 4.1.1. (172.64.52.73, 172.64.53.117)
mach2plus.com/A: The response had an invalid RCODE (REFUSED). See RFC 1035, Sec. 4.1.1. (172.64.52.73, 172.64.53.117, UDP_-_EDNS0_4096_D_KN)
mach2plus.com/AAAA: The response had an invalid RCODE (REFUSED). See RFC 1035, Sec. 4.1.1. (172.64.52.73, 172.64.53.117, UDP_-_EDNS0_4096_D_KN)
mach2plus.com/DNSKEY: The response had an invalid RCODE (REFUSED). See RFC 1035, Sec. 4.1.1. (172.64.52.73, 172.64.53.117, UDP_-_EDNS0_4096_D_KN, UDP_-_EDNS0_512_D_KN)
mach2plus.com/MX: The response had an invalid RCODE (REFUSED). See RFC 1035, Sec. 4.1.1. (172.64.52.73, 172.64.53.117, UDP_-_EDNS0_4096_D_KN, UDP_-_EDNS0_512_D_KN)
mach2plus.com/NS: The response had an invalid RCODE (REFUSED). See RFC 1035, Sec. 4.1.1. (172.64.52.73, 172.64.53.117, UDP_-_EDNS0_4096_D_KN)
mach2plus.com/NSEC3PARAM: The response had an invalid RCODE (REFUSED). See RFC 1035, Sec. 4.1.1. (172.64.52.73, 172.64.53.117, UDP_-_EDNS0_4096_D_KN)
mach2plus.com/SOA: The response had an invalid RCODE (REFUSED). See RFC 1035, Sec. 4.1.1. (172.64.52.73, 172.64.53.117, TCP_-_EDNS0_4096_D_N)
mach2plus.com/SOA: The response had an invalid RCODE (REFUSED). See RFC 1035, Sec. 4.1.1. (172.64.52.73, 172.64.53.117, UDP_-_EDNS0_4096_D_KN, UDP_-_EDNS0_4096_D_KN_0x20)
mach2plus.com/TXT: The response had an invalid RCODE (REFUSED). See RFC 1035, Sec. 4.1.1. (172.64.52.73, 172.64.53.117, UDP_-_EDNS0_4096_D_KN)
1mnx96pk0u.mach2plus.com/A has errors; select the "Denial of existence" DNSSEC option to see them.
mach2plus.com/DNSKEY has errors; select the "Denial of existence" DNSSEC option to see them.
mach2plus.com/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.