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zhsumarc.com

Checked 2026-10-22 11:43 UTC · first added 2026-10-21
✗Problems found Score 59 of 100

Domain & DNS

warn

21 passed 3 warn 0 failed

Areas

iRegistration iDelegation ✓Nameservers !SOA !DNSSEC iRecords

Problems

  • !
    Serials differ
    SOA · The nameservers serve different versions of the zone: 2026081813 on dns9.hichina.com (120.76.107.52), dns9.hichina.com (120.76.107.42), dns9.hichina.com (2408:4009:501::17); 2026082509 on dns10.hichina.com (139.224.142.111), dns10.hichina.com (139.224.142.121), dns10.hichina.com (2408:4009:501::18); 2026082616 on dns10.hichina.com (47.118.199.201), dns9.hichina.com (139.224.142.122), dns9.hichina.com (47.118.199.212), dns9.hichina.com (139.224.142.112), dns9.hichina.com (39.96.153.52); 2026082617 on dns10.hichina.com (39.96.153.41), dns10.hichina.com (47.118.199.211), dns10.hichina.com (120.76.107.51), dns10.hichina.com (120.76.107.41), dns10.hichina.com (39.96.153.51), dns9.hichina.com (39.96.153.42), dns9.hichina.com (47.118.199.202). This is normal for a few minutes after a change; if it lasts, zone transfers to the secondaries are failing.
    #22
  • !
    Unusual SOA timers
    SOA · expire 1d is shorter than 7d; secondaries stop answering too soon when the primary is down. Current values: refresh 1h, retry 20m, expire 1d, negative TTL 10m.
    #23
  • !
    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

Recent checks

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Full report

Domain & DNS report for zhsumarc.com ›

Mail

fail

15 passed 4 warn 2 failed

Areas

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

Problems

  • ✗
    No DMARC record
    DMARC · No DMARC record was found for this domain. DMARC is essential for preventing email spoofing. Add a DMARC record with p=reject or at least p=quarantine.
    #5
  • ✗
    No DKIM keys published
    DKIM · _domainkey.zhsumarc.com does not exist (NXDOMAIN), so no DKIM keys are published. DKIM helps prevent email spoofing. Configure DKIM with your email service provider.
    #7
  • !
    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: mx1.qiye.aliyun.com, mx2.qiye.aliyun.com, mx3.qiye.aliyun.com
    #11
  • !
    Addresses without reverse DNS
    MX · These MX addresses have no PTR record, which many receivers treat as a spam signal: 47.246.167.188 (mx1.qiye.aliyun.com), 47.246.137.47 (mx3.qiye.aliyun.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

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