DNS Report: sysu.edu.cn

Generated: 2026-08-09T23:38:17-05:00

77/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/301 IPv4 address(es) detected.
ERRORIPv6 (AAAA)0/100 IPv6 address(es) detected.
OKName server redundancy20/203 NS record(s); 2 or more required.
OKSOA record10/10Authoritative zone record.
ERRORDNSSEC chain0/15Both DS and DNSKEY are required.
ERRORCAA policy0/5Certificate authority restriction.
OKDNS propagation10/10Agreement between public resolvers.
OKMX records20/201 MX record(s).
OKSPF25/25SPF policy published.
OKDMARC25/25DMARC policy published.
ERRORDKIM0/20No tested DKIM selector responded.
ERRORMTA-STS0/5Mail transport policy.
ERRORTLS-RPT0/5TLS reporting policy.
OKValid TLS certificate55/5567 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
WARNINGHTTP security headers16/354 of 9 evaluated headers detected.
OKPTR reverse DNS30/30PTR: www.sysu.edu.cn
WARNINGIPv4 diversity20/35Two or more IPv4 addresses receive full points.
ERRORIPv6 connectivity0/35AAAA availability.
OKDNS resolution40/40At least one address family must resolve.
OKHTTP response40/40HTTP/1.1 200 OK
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
202.116.64.8
AAAA
CNAME
MX
10 mail.sysu.edu.cn.
TXT
"v=spf1 ip4:202.116.64.0/24 -all"
"adobe-idp-site-verification=a2eb4ed6c5f7ff5c94a092e620c0f476dfe11b8d7411b1d46f8d3ad36bf7b0a9"
NS
ns2.sysu.edu.cn.
ns1.sysu.edu.cn.
ns3.sysu.edu.cn.
SOA
ns1.sysu.edu.cn. hostmaster.mail.sysu.edu.cn. 2026072400 10800 3600 604800 3600
CAA
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP