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trello.com

Checked 2026-10-22 11:12 UTC · first added 2026-10-21
!Passed with warnings Score 85 of 100

Domain & DNS

warn

28 passed 2 warn 0 failed

Areas

iRegistration iDelegation ✓Nameservers !SOA iDNSSEC !Records

Problems

  • !
    Unusual SOA timers
    SOA · negative caching TTL (minimum) 2m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 2h, retry 15m, expire 14d, negative TTL 2m.
    #23
  • !
    Very low TTLs
    Records · These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1d; resolvers may use either.
    #32

Recent checks

!

Full report

Domain & DNS report for trello.com ›

Mail

warn

29 passed 3 warn 0 failed

Areas

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

Problems

  • !
    Hosts without IPv6
    MX · The following MX hosts could not be resolved to IPv6 addresses: mxa-001d9801.gslb.pphosted.com, mxb-001d9801.gslb.pphosted.com
    #11
  • !
    Signatures expire in 7h0m0s
    DNSSEC · DNSKEY signatures expire at 2026-10-22T18:00:00Z (in 7h0m0s). Check that re-signing works.
    #21
  • !
    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 trello.com ›