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sciebo.de

Checked 2026-10-22 00:02 UTC · first added 2026-10-21
✗Problems found Score 69 of 100

Domain & DNS

warn

23 passed 1 warn 0 failed

Areas

iRegistration iDelegation iNameservers ✓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

Recent checks

!

Full report

Domain & DNS report for sciebo.de ›

Mail

fail

14 passed 6 warn 1 failed

Areas

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

Problems

  • ✗
    No DMARC record
    DMARC · No DMARC record was found for this domain. DMARC is essential for preventing email spoofing. Add a DMARC record with p=reject or at least p=quarantine.
    #5
  • !
    Ends with ?all (neutral)
    SPF · SPF record uses ?all (neutral), which gives no protection against unauthorized senders. Use -all or ~all instead.
    #3
  • !
    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
  • !
    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: udcm-wwu1.uni-muenster.de, udcm-wwu2.uni-muenster.de, udcm-wwu3.uni-muenster.de, udcm-wwu4.uni-muenster.de
    #11
  • !
    Broad IP ranges
    SPF · These ranges authorize tens of thousands of addresses or more: ip6:2001:4cf0::/29. Check that you really own and send from all of them.
    #27
  • !
    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 sciebo.de ›