SurfaceMap › d › desy.de

desy.de

Checked 2026-10-21 22:13 UTC · first added 2026-10-21
✗Problems found Score 69 of 100

Domain & DNS

warn

24 passed 2 warn 0 failed

Areas

iRegistration ✓Delegation iNameservers !SOA !DNSSEC ✓Records

Problems

  • !
    Serials differ
    SOA · The nameservers serve different versions of the zone: 2405661489 on dwalin.nikhef.nl (192.16.199.17), dwalin.nikhef.nl (2001:610:120:1000::199:17), ext-dns-2.cern.ch (192.91.245.85), ext-dns-2.cern.ch (2001:1458:1:2::100:85), milky.desy.de (131.169.40.200), milky.desy.de (2001:638:700:1028::1:c8), way.desy.de (131.169.194.200), way.desy.de (2001:638:700:10c2::1:c8); 2405725710 on dns-2.dfn.de (193.174.75.54), dns-2.dfn.de (2001:638:d:b102::1). This is normal for a few minutes after a change; if it lasts, zone transfers to the secondaries are failing.
    #22
  • !
    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

!

Full report

Domain & DNS report for desy.de ›

Mail

fail

23 passed 5 warn 1 failed

Areas

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

Problems

  • ✗
    Policy: none (monitoring only)
    DMARC · DMARC policy is set to 'none', which only monitors but doesn't protect against spoofing. Consider upgrading to 'quarantine' or ideally 'reject'.
    #4
  • !
    Ends with ?all (neutral)
    SPF · SPF record uses ?all (neutral), which gives no protection against unauthorized senders. Use -all or ~all instead.
    #3
  • !
    Not enabled
    DNSSEC · DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.
    #8
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: default (1024 bits). Rotate to a 2048-bit key.
    #23
  • !
    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

Recent checks

✗

Full report

Mail report for desy.de ›