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guestoo.de

Checked 2026-10-21 22:41 UTC · first added 2026-10-21
!Passed with warnings Score 88 of 100

Domain & DNS

warn

27 passed 2 warn 0 failed

Areas

iRegistration ✓Delegation !Nameservers !SOA iDNSSEC iRecords

Problems

  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns2.codepiraten.com: "PowerDNS Authoritative Server 5.0.2". Hide or replace the version string.
    #17
  • !
    Unusual SOA timers
    SOA · retry 1h should be shorter than refresh 1h. Current values: refresh 1h, retry 1h, expire 30d, negative TTL 1h.
    #23

Recent checks

!

Full report

Domain & DNS report for guestoo.de ›

Mail

warn

32 passed 2 warn 0 failed

Areas

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

Problems

  • !
    Single MX host, no backup
    MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.
    #12
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: mail (1024 bits). Rotate to a 2048-bit key.
    #23

Recent checks

!

Full report

Mail report for guestoo.de ›