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smbc-card.com

Checked 2026-10-22 10:44 UTC · first added 2026-10-21
✗Problems found Score 75 of 100

Domain & DNS

fail

26 passed 1 warn 1 failed

Areas

iRegistration iDelegation ✗Nameservers !SOA ✓DNSSEC iRecords

Problems

  • ✗
    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: ns014-g61uv95htvomutal.g.d-53.jp (2001:240:bb81::29:1105): read tcp [2a01:4f8:1c1c:eebf::1]:48880->[2001:240:bb81::29:1105]:53: read: connection reset by peer; ns014-g61uv95htvomutal.g.d-53.org (2001:240:bb81::29:105): read tcp [2a01:4f8:1c1c:eebf::1]:52062->[2001:240:bb81::29:105]:53: read: connection reset by peer.
    #19
  • !
    Unusual SOA timers
    SOA · refresh 10m is outside 20m–1d; retry 10m should be shorter than refresh 10m. Current values: refresh 10m, retry 10m, expire 7d, negative TTL 15m.
    #23

Recent checks

✗

Full report

Domain & DNS report for smbc-card.com ›

Mail

warn

25 passed 4 warn 0 failed

Areas

iSPF ✓DMARC !DKIM ✓DNSSEC !MX !TLS ✓BIMI

Problems

  • !
    No key under common selectors
    DKIM · The _domainkey name exists but no DKIM key was found under the common selectors. Selectors are provider-specific; check yours with -selector.
    #7
  • !
    Hosts without IPv6
    MX · The following MX hosts could not be resolved to IPv6 addresses: mx.securemx.jp
    #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
  • !
    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 smbc-card.com ›