SurfaceMap › u › uni-augsburg.de

uni-augsburg.de

Checked 2026-10-22 00:50 UTC · first added 2026-10-21
✗Problems found Score 72 of 100

Domain & DNS

warn

24 passed 2 warn 0 failed

Areas

iRegistration iDelegation iNameservers !SOA !DNSSEC iRecords

Problems

  • !
    Serials differ
    SOA · The nameservers serve different versions of the zone: 2261021893 on dns-3.dfn.de (193.174.75.58), dns-3.dfn.de (2001:638:d:b103::1); 2261021962 on dns1.rz.uni-augsburg.de (137.250.2.254), dns2.rz.uni-augsburg.de (137.250.2.253). This is normal for a few minutes after a change; if it lasts, zone transfers to the secondaries are failing.
    #22
  • !
    NSEC3 with extra iterations or salt
    DNSSEC · NSEC3 uses 10 iterations and a 8-byte salt. RFC 9276 recommends 0 iterations and no salt: extra iterations cost resolvers CPU and add no real protection, and some validators treat high counts as insecure.
    #31

Recent checks

!

Full report

Domain & DNS report for uni-augsburg.de ›

Mail

fail

25 passed 4 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
  • !
    Hosts without IPv6
    MX · The following MX hosts could not be resolved to IPv6 addresses: a2541.mx.srv.dfn.de, b2541.mx.srv.dfn.de, c2541.mx.srv.dfn.de
    #11
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: s1 (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 uni-augsburg.de ›