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htcdev.com

Checked 2026-10-22 09:13 UTC · first added 2026-10-21
✗Problems found Score 62 of 100

Domain & DNS

warn

27 passed 2 warn 0 failed

Areas

iRegistration iDelegation ✓Nameservers ✓SOA !DNSSEC !Records

Problems

  • !
    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: A (1m), MX (1m). Low TTLs are useful just before a planned change.
    #32

Recent checks

!

Full report

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Mail

fail

21 passed 4 warn 2 failed

Areas

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

Problems

  • ✗
    No DKIM keys published
    DKIM · _domainkey.htcdev.com does not exist (NXDOMAIN), so no DKIM keys are published. DKIM helps prevent email spoofing. Configure DKIM with your email service provider.
    #7
  • ✗
    Syntax errors
    SPF · Receivers reject the whole SPF record (permerror) because of: "ip4:": ip4 needs a value; unknown mechanism "54.87.141.62".
    #25
  • !
    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: inbound-smtp.us-east-1.amazonaws.com
    #11
  • !
    More than 5 MX records
    MX · Found 6 MX records, which is more than the recommended maximum of 5. Too many MX records may indicate a misconfiguration.
    #13
  • !
    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

✗

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