klarna.de

Checked 21 October 2026, 23:10 UTC · via 8.8.8.8
!Passed with warnings
27 passed 4 warnings 0 failed 2 info

SPF

pass

SPF record published

Found

Record
v=spf1 include:klarna.com -all
DNS lookups
7 of 10
Void lookups
0 of 2

Checks

  • ✓ No deprecated ptr mechanism #1
    No ptr mechanism found in SPF record.
  • ✓ 7 of 10 DNS lookups #2
    SPF record needs 7 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

pass

p=reject (_dmarc.klarna.de)

Found

Record
v=DMARC1; p=reject; adkim=r; aspf=r; fo=1; rua=mailto:dmarc-reports@klarna.com
Found at
_dmarc.klarna.de
External report address
mailto:dmarc-reports@klarna.com (authorized)
TagValueMeaning
vDMARC1Version
prejectPolicy
ruamailto:dmarc-reports@klarna.comAggregate report addresses
adkimrDKIM alignment (r = relaxed, s = strict)
aspfrSPF alignment (r = relaxed, s = strict)
fo1Failure reporting options

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:dmarc-reports@klarna.com
  • ✓ 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

Selectors: google, s1, s2

Found

Selectors
google, s1, s2
_domainkey
NOERROR
SelectorKeyFlags
googleRSA 2048 bits
s1RSA 2048 bits
s2RSA 1024 bits

Checks

  • ✓ Keys found: google, s1, s2 #7
    DKIM keys found for this domain with selectors: google, s1, s2
  • !
    1024-bit DKIM key
    1024-bit RSA keys are the minimum and are considered weak today: s2 (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
10mxz1.klarna.comA 52.30.236.203ec2-52-30-236-203.eu-west-1.compute.amazonaws.com ✓
10mxz2.klarna.comA 54.73.174.245ec2-54-73-174-245.eu-west-1.compute.amazonaws.com ✓
10mxz3.klarna.comA 3.73.181.240ec2-3-73-181-240.eu-central-1.compute.amazonaws.com ✓
10mxz4.klarna.comA 35.156.176.213ec2-35-156-176-213.eu-central-1.compute.amazonaws.com ✓

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: mxz1.klarna.com, mxz2.klarna.com, mxz3.klarna.com, mxz4.klarna.com
    #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 4 MX addresss have a PTR record that resolves back to them.

TLS

warn

no MTA-STS · no TLS-RPT · DANE on 0 of 4 MX hosts

Found

DANE (TLSA records)

MX hostTLSADNSSEC
mxz1.klarna.comnone-
mxz2.klarna.comnone-
mxz3.klarna.comnone-
mxz4.klarna.comnone-

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
  • i
    Not configured
    TLS-RPT lets senders report TLS delivery problems to you. It is most useful together with MTA-STS or DANE.
    #35
  • i
    Not used
    No MX host publishes TLSA records. DANE lets senders verify your mail server's certificate through DNSSEC; it requires DNSSEC on the MX host's zone.
    #36

BIMI

pass

https://x.klarnacdn.net/bimi/klarna_bank_ab.svg

Found

Record
v=BIMI1;l=https://x.klarnacdn.net/bimi/klarna_bank_ab.svg;a=https://x.klarnacdn.net/bimi/klarna_bank_ab.pem
Found at
default._bimi.klarna.de
Logo
https://x.klarnacdn.net/bimi/klarna_bank_ab.svg
Certificate
https://x.klarnacdn.net/bimi/klarna_bank_ab.pem

Checks

  • ✓ Logo and certificate published #38
    BIMI logo: https://x.klarnacdn.net/bimi/klarna_bank_ab.svg; certificate: https://x.klarnacdn.net/bimi/klarna_bank_ab.pem
  • ✓ DMARC meets BIMI requirements #39
    DMARC is enforced on all mail, as BIMI requires.