SurfaceMap › s › sinopec.com

sinopec.com

Checked 2026-10-22 10:43 UTC · first added 2026-10-21
✗Problems found Score 53 of 100

Domain & DNS

fail

22 passed 3 warn 2 failed

Areas

iRegistration !Delegation ✗Nameservers ✓SOA !DNSSEC !Records

Problems

  • ✗
    Nameservers not responding
    Nameservers · These addresses did not answer, so resolvers waste time on timeouts: ns5.sinopec.com (110.16.192.111): read udp 46.225.38.91:53140->110.16.192.111:53: i/o timeout; ns8.sinopec.com (110.16.192.114): read udp 46.225.38.91:38161->110.16.192.114:53: i/o timeout.
    #14
  • ✗
    No DNS over TCP
    Nameservers · DNS over TCP is required (RFC 7766); without it, large answers such as DNSSEC responses fail. Not answering over TCP: ns1.sinopec.com (114.246.38.132): dial tcp 114.246.38.132:53: i/o timeout; ns2.sinopec.com (114.246.38.133): dial tcp 114.246.38.133:53: i/o timeout; ns3.sinopec.com (219.142.191.158): dial tcp 219.142.191.158:53: i/o timeout; ns4.sinopec.com (219.142.191.134): dial tcp 219.142.191.134:53: i/o timeout.
    #19
  • !
    No IPv6
    Delegation · None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13
  • !
    Not signed
    DNSSEC · The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27
  • !
    Very low TTLs
    Records · These records have a TTL below 5m, causing extra queries and slower lookups: MX (30s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 5m; resolvers may use either.
    #32

Recent checks

✗

Full report

Domain & DNS report for sinopec.com ›

Mail

warn

23 passed 6 warn 0 failed

Areas

✓SPF ✓DMARC !DKIM !DNSSEC !MX !TLS iBIMI

Problems

  • !
    Not enabled
    DNSSEC · DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.
    #8
  • !
    Hosts without IPv6
    MX · The following MX hosts could not be resolved to IPv6 addresses: mailmx4.sinopec.com
    #11
  • !
    Single MX host, no backup
    MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.
    #12
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: default (1024 bits). Rotate to a 2048-bit key.
    #23
  • !
    Addresses without reverse DNS
    MX · These MX addresses have no PTR record, which many receivers treat as a spam signal: 218.189.28.235 (mailmx4.sinopec.com). Ask your hosting provider to set one.
    #30
  • !
    Not configured
    TLS · MTA-STS is not configured, so other mail servers fall back to unencrypted delivery when TLS fails or is stripped by an attacker. Publish a _mta-sts TXT record and a policy at https://mta-sts.<domain>/.well-known/mta-sts.txt.
    #32

Recent checks

!

Full report

Mail report for sinopec.com ›