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uni-stuttgart.de

Checked 2026-10-22 00:50 UTC · first added 2026-10-21
✗Problems found Score 71 of 100

Domain & DNS

warn

26 passed 1 warn 0 failed

Areas

iRegistration !Delegation ✓Nameservers iSOA iDNSSEC iRecords

Problems

  • !
    Nameservers in one network
    Delegation · all IPv4 addresses are in 129.69.252.0/24; all IPv6 addresses are in 2001:7c0:2053::/48. A single network failure takes all nameservers down; RFC 2182 recommends topologically separate networks (anycast setups are an exception).
    #10

Recent checks

!

Full report

Domain & DNS report for uni-stuttgart.de ›

Mail

fail

18 passed 2 warn 2 failed

Areas

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

Problems

  • ✗
    No 'all' mechanism
    SPF · SPF record doesn't have an 'all' mechanism. Add -all or ~all at the end of your SPF record.
    #3
  • ✗
    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
  • !
    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 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 uni-stuttgart.de ›