bundesdruckerei.de

Checked 21 October 2026, 22:00 UTC · via 8.8.8.8
!Passed with warnings
30 passed 3 warnings 0 failed 2 info

SPF

pass

SPF record published

Found

Record
v=spf1 include:bdr.de ~all
DNS lookups
1 of 10
Void lookups
0 of 2

Checks

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

warn

p=quarantine (_dmarc.bundesdruckerei.de)

Found

Record
v=DMARC1; p=quarantine; rua=mailto:dmarc4nx@bdr.de; ruf=mailto:dmarc4nx@bdr.de; fo=1; adkim=r; aspf=r; pct=100; rf=afrf; ri=3600
Found at
_dmarc.bundesdruckerei.de
External report address
mailto:dmarc4nx@bdr.de (authorized)
TagValueMeaning
vDMARC1Version
pquarantinePolicy
pct100Percentage of mail the policy applies to
ruamailto:dmarc4nx@bdr.deAggregate report addresses
rufmailto:dmarc4nx@bdr.deFailure report addresses
adkimrDKIM alignment (r = relaxed, s = strict)
aspfrSPF alignment (r = relaxed, s = strict)
fo1Failure reporting options
rfafrfFailure report format
ri3600Report interval (seconds)

Checks

  • !
    Policy: quarantine
    DMARC policy is set to 'quarantine'. Consider upgrading to 'reject' for stronger protection once you've verified legitimate emails are passing authentication.
    #4
  • ✓ 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:dmarc4nx@bdr.de
  • ✓ Subdomain policy: quarantine #20
    Subdomains are covered by policy 'quarantine'.
  • ✓ External report addresses authorized #29
    Report addresses in other domains have published their authorization.

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

pass

Signed, DS published at parent

Found

DNSKEY records
Yes (2)
DS at parent
Yes
Algorithms
RSASHA256 (8)
Key tags
63671, 51330
Signatures valid until
14 November 2026, 15:31 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 valid until 2026-11-14 #21
    DNSKEY signatures are valid until 2026-11-14T15:31:18Z.

MX

warn

2 mail servers

Found

PriorityHostRecordsReverse DNS
10mx1.bdr.deA 193.28.64.251mx1.bdr.de ✓
20mx2.bdr.deA 193.28.64.252mx2.bdr.de ✓

Checks

  • ✓ 2 MX records #9
    Found 2 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: mx1.bdr.de, mx2.bdr.de
    #11
  • ✓ Redundant MX hosts #12
    Found 2 MX records, which provides redundancy for email delivery.
  • ✓ At most 5 MX records #13
    Found 2 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 2 MX addresss have a PTR record that resolves back to them.

TLS

info

MTA-STS enforce · TLS-RPT · DANE on 0 of 2 MX hosts

Found

MTA-STS record
v=STSv1; id=20210729121300
Policy URL
https://mta-sts.bundesdruckerei.de/.well-known/mta-sts.txt
Mode
enforce
Allowed MX
mx1.bdr.de, mx2.bdr.de
Max age
86400 seconds
TLS-RPT record
v=TLSRPTv1; rua=mailto:mta-sts4nx@bdr.de

DANE (TLSA records)

MX hostTLSADNSSEC
mx1.bdr.denone-
mx2.bdr.denone-

Checks

  • ✓ Record published #32
    MTA-STS record found with id 20210729121300.
  • ✓ Policy enforced #33
    The MTA-STS policy is enforced and cached for 24h0m0s.
  • ✓ All MX hosts covered #34
    Every MX host matches an mx: line of the MTA-STS policy.
  • ✓ Reports enabled #35
    TLS reports are sent to: mailto:mta-sts4nx@bdr.de
  • 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

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