willingen.de

Checked 22 October 2026, 01:01 UTC · via 8.8.8.8
✗Problems found
21 passed 6 warnings 1 failed 1 info

SPF

pass

SPF record published

Found

Record
v=spf1 include:spfa.myconvento.com include:spf.crsend.com include:ekom21.de include:smtp.neusta-is.de -all
DNS lookups
4 of 10
Void lookups
0 of 2

Checks

  • ✓ No deprecated ptr mechanism #1
    No ptr mechanism found in SPF record.
  • ✓ 4 of 10 DNS lookups #2
    SPF record needs 4 DNS lookups (limit is 10).
  • ✓ Ends with -all #3
    SPF record properly uses -all to restrict unauthorized senders.
  • ✓ Record published #6
    SPF record exists for this domain.
  • ✓ Single record #16
    Exactly one SPF record is published.
  • ✓ Valid syntax #25
    All SPF mechanisms and modifiers are valid.
  • ✓ No void lookups #26
    All include/redirect targets exist.
  • ✓ No overly broad IP ranges #27
    All ip4/ip6 ranges are narrow enough.

DMARC

fail

p=none (_dmarc.willingen.de)

Found

Record
v=DMARC1; p=none
Found at
_dmarc.willingen.de
TagValueMeaning
vDMARC1Version
pnonePolicy

Checks

  • ✗
    Policy: none (monitoring only)
    DMARC policy is set to 'none', which only monitors but doesn't protect against spoofing. Consider upgrading to 'quarantine' or ideally 'reject'.
    #4
  • ✓ Record published #5
    DMARC record exists for this domain.
  • ✓ Valid syntax #17
    DMARC record syntax is valid.
  • !
    No aggregate reports (rua)
    DMARC record has no rua tag, so you receive no aggregate reports about who sends mail as your domain. Add rua=mailto:...
    #19

DKIM

warn

Selectors: default

Found

Selectors
default
_domainkey
NOERROR
SelectorKeyFlags
defaultRSA 1024 bits

Checks

  • ✓ Keys found: default #7
    DKIM keys found for this domain with selectors: default
  • !
    1024-bit DKIM key
    1024-bit RSA keys are the minimum and are considered weak today: default (1024 bits). Rotate to a 2048-bit key.
    #23
  • ✓ No problematic flags #24
    No keys in test mode, revoked, or limited to SHA-1.

DNSSEC

warn

Not signed

Found

DNSKEY records
No (0)
DS at parent
No

Checks

  • !
    Not enabled
    DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.
    #8

MX

warn

4 mail servers

Found

PriorityHostRecordsReverse DNS
10mx3sgie.ekom21.deA 195.226.81.82 AAAA 2a02:1010:c210:2d::2bmx3sgie.ekom21.de ✓ mx3sgie.ekom21.de ✓
10mx3skas.kgrz-ks.deA 80.69.201.82mx3skas.kgrz-ks.de ✓
10mx4skas.kgrz-ks.deA 80.69.201.83mx4skas.kgrz-ks.de ✓
10mx5skas.kgrz-ks.deA 62.156.249.82mx5skas.kgrz-ks.de ✓

Checks

  • ✓ 4 MX records #9
    Found 4 MX records for this domain.
  • ✓ All hosts resolve #10
    All MX records resolve to valid IP addresses.
  • !
    Hosts without IPv6
    The following MX hosts could not be resolved to IPv6 addresses: mx3skas.kgrz-ks.de, mx4skas.kgrz-ks.de, mx5skas.kgrz-ks.de
    #11
  • ✓ Redundant MX hosts #12
    Found 4 MX records, which provides redundancy for email delivery.
  • ✓ At most 5 MX records #13
    Found 4 MX records, which is within the recommended range (1-5).
  • ✓ No localhost targets #14
    No MX records pointing to localhost found.
  • ✓ No private IP addresses #15
    No MX records resolving to private IP addresses found.
  • ✓ No CNAME targets #22
    No MX records point to a CNAME.
  • ✓ Reverse DNS confirmed #30
    All 5 MX addresss have a PTR record that resolves back to them.

TLS

warn

no MTA-STS · no TLS-RPT · DANE on 4 of 4 MX hosts

Found

DANE (TLSA records)

MX hostTLSADNSSEC
mx3sgie.ekom21.de3 1 1 9da03b927f09304f… 3 1 2 28f4354186e65a7e…Yes
mx3skas.kgrz-ks.de3 1 2 26ae2d15450c3d6e… 3 1 1 dbde190f2aa55360…Yes
mx4skas.kgrz-ks.de3 1 1 d235c7f114266624… 3 1 2 a407124e239614f1…Yes
mx5skas.kgrz-ks.de3 1 1 456cd32ad6239448… 3 1 2 ef65f6582bb4e2f2…Yes

Checks

  • !
    Not configured
    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
    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
  • ✓ DANE on all MX hosts #36
    All 4 MX hosts publish DNSSEC-validated TLSA records.

BIMI

info

No BIMI record

Checks

  • i
    Not configured
    BIMI shows your logo next to your mail in supporting mail clients. It requires DMARC enforcement.
    #38