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sanquin.nl

Checked 2026-10-21 21:25 UTC · first added 2026-10-21
!Check could not complete

Domain & DNS

error

26 passed 0 warn 0 failed 1 errors

lookups failed for rdap; results are incomplete

Areas

iRegistration iDelegation iNameservers ✓SOA ✓DNSSEC iRecords

Recent checks

!

Full report

Domain & DNS report for sanquin.nl ›

Mail

fail

28 passed 4 warn 1 failed

Areas

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

Problems

  • ✗
    Weak DKIM key
    DKIM · RSA keys shorter than 1024 bits can be cracked and are ignored by receivers (RFC 8301): dkim (384 bits). Rotate to a 2048-bit key.
    #23
  • !
    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
  • !
    Not configured
    TLS · MTA-STS or DANE is used without TLS-RPT, so you get no reports when senders fail to deliver because of TLS problems. Publish _smtp._tls TXT "v=TLSRPTv1; rua=mailto:...".
    #35
  • !
    No certificate (a=)
    BIMI · The logo is published without a Verified Mark Certificate. Gmail and Apple Mail only show BIMI logos with a VMC or CMC; Yahoo shows it without one.
    #38

Recent checks

✗

Full report

Mail report for sanquin.nl ›