seat.de

Checked 22 October 2026, 00:10 UTC · via 8.8.8.8
✗Problems found
22 passed 5 warnings 2 failed 2 info

SPF

pass

SPF record published

Found

Record
v=spf1 mx ip4:193.110.194.27 ip4:193.110.194.28 ip4:193.110.194.29 ip4:193.110.194.30 ip4:193.110.194.25 ip4:193.110.194.26 include:_spf.salesforce.com include:_spf.vwgroup.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

fail

p=none (_dmarc.seat.de)

Found

Record
v=DMARC1;p=none;rua=mailto:dmarc.rua@vwgroup.com;ruf=mailto:dmarc.ruf@vwgroup.com
Found at
_dmarc.seat.de
External report address
mailto:dmarc.rua@vwgroup.com (authorized)
External report address
mailto:dmarc.ruf@vwgroup.com (authorized)
TagValueMeaning
vDMARC1Version
pnonePolicy
ruamailto:dmarc.rua@vwgroup.comAggregate report addresses
rufmailto:dmarc.ruf@vwgroup.comFailure report addresses

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.
  • ✓ Aggregate reports enabled #19
    Aggregate reports are sent to: mailto:dmarc.rua@vwgroup.com
  • ✓ External report addresses authorized #29
    Report addresses in other domains have published their authorization.

DKIM

warn

Selectors: s1, s2

Found

Selectors
s1, s2
_domainkey
NOERROR
SelectorKeyFlags
s1RSA 1024 bitsh=sha256
s2RSA 1024 bitsh=sha256

Checks

  • ✓ Keys found: s1, s2 #7
    DKIM keys found for this domain with selectors: s1, s2
  • !
    1024-bit DKIM key
    1024-bit RSA keys are the minimum and are considered weak today: s1 (1024 bits), 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

2 mail servers

Found

PriorityHostRecordsReverse DNS
10mx10.vwgroup.comA 194.114.62.76 A 194.114.62.214 A 194.114.62.75 A 194.114.62.213mx10.vwgroup.com ✓ mx10.vwgroup.com ✓ mx10.vwgroup.com ✓ mx10.vwgroup.com ✓
20mx20.vwgroup.comA 194.114.62.78 A 194.114.62.77mr4.volkswagen.de ✓ mr3.volkswagen.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: mx10.vwgroup.com, mx20.vwgroup.com
    #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 6 MX addresss have a PTR record that resolves back to them.

TLS

warn

no MTA-STS · no TLS-RPT · DANE on 0 of 2 MX hosts

Found

DANE (TLSA records)

MX hostTLSADNSSEC
mx10.vwgroup.comnone-
mx20.vwgroup.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

fail

https://www.seat.de/content/dam/public/seat-website/global-header/seat-logo/seat-s-logo.svg

Found

Record
v=BIMI1; l=https://www.seat.de/content/dam/public/seat-website/global-header/seat-logo/seat-s-logo.svg
Found at
default._bimi.seat.de
Logo
https://www.seat.de/content/dam/public/seat-website/global-header/seat-logo/seat-s-logo.svg

Checks

  • !
    No certificate (a=)
    The logo is published without a Verified Mark Certificate. Gmail and Apple Mail only show BIMI logos with a VMC or CMC; Yahoo shows it without one.
    #38
  • ✗
    DMARC not strict enough for BIMI
    Mail clients will not show the logo. BIMI requires DMARC p=quarantine or p=reject (now p=none), a subdomain policy other than sp=none.
    #39