inburgeren.nl

Checked 22 October 2026, 13:52 UTC · via 8.8.8.8
!Passed with warnings
15 passed 2 warnings 0 failed 4 info

SPF

info

SPF record published

Found

Record
v=spf1 redirect=_spf.duo.nl
DNS lookups
2 of 10
Void lookups
0 of 2

Checks

  • ✓ No deprecated ptr mechanism #1
    No ptr mechanism found in SPF record.
  • ✓ 2 of 10 DNS lookups #2
    SPF record needs 2 DNS lookups (limit is 10).
  • i
    Delegated via redirect
    SPF record has no 'all' mechanism but redirects to _spf.duo.nl, whose policy applies.
    #3
  • ✓ 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

pass

p=reject (_dmarc.inburgeren.nl)

Found

Record
v=DMARC1;p=reject;rua=mailto:rua@duo.nl;adkim=r;aspf=r;pct=100;sp=reject
Found at
_dmarc.inburgeren.nl
External report address
mailto:rua@duo.nl (authorized)
TagValueMeaning
vDMARC1Version
prejectPolicy
sprejectSubdomain policy
pct100Percentage of mail the policy applies to
ruamailto:rua@duo.nlAggregate report addresses
adkimrDKIM alignment (r = relaxed, s = strict)
aspfrSPF alignment (r = relaxed, s = strict)

Checks

  • ✓ Policy: reject #4
    DMARC policy is set to 'reject', which provides the strongest protection against email spoofing.
  • ✓ Record published #5
    DMARC record exists for this domain.
  • ✓ Valid syntax #17
    DMARC record syntax is valid.
  • ✓ Applies to 100% of mail #18
    DMARC policy applies to all failing mail.
  • ✓ Aggregate reports enabled #19
    Aggregate reports are sent to: mailto:rua@duo.nl
  • ✓ Subdomain policy: reject #20
    Subdomains are covered by policy 'reject'.
  • ✓ External report addresses authorized #29
    Report addresses in other domains have published their authorization.

DKIM

warn

No keys found under the checked selectors

Found

Selectors
None found
_domainkey
NOERROR

Checks

  • !
    No key under common selectors
    The _domainkey name exists but no DKIM key was found under the common selectors. Selectors are provider-specific; check yours with -selector.
    #7

DNSSEC

warn

Signed, DS published at parent

Found

DNSKEY records
Yes (2)
DS at parent
Yes
Algorithms
RSASHA256 (8)
Key tags
11492, 42616
Signatures valid until
26 October 2026, 07:22 UTC

Checks

  • ✓ Signed, DS published at parent #8
    DNSSEC is enabled for this domain (DNSKEY and DS present), providing additional security for DNS lookups.
  • !
    Signatures expire in 89h0m0s
    DNSKEY signatures expire at 2026-10-26T07:22:07Z (in 89h0m0s). Check that re-signing works.
    #21

MX

info

Null MX: domain accepts no mail

Checks

  • i
    Null MX: accepts no mail
    Domain publishes a null MX (RFC 7505): it explicitly accepts no email.
    #9
  • i
    Receives no mail but sends
    The domain publishes a null MX but its SPF record authorizes senders. If it does not send mail either, use "v=spf1 -all" and DMARC p=reject.
    #28

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