bestwestern.de

Checked 21 October 2026, 21:38 UTC · via 8.8.8.8
!Passed with warnings
26 passed 4 warnings 0 failed 2 info

SPF

pass

SPF record published

Found

Record
v=spf1 include:spf.protection.outlook.com mx ip4:87.230.97.192/26 ip4:80.237.181.64/27 ip4:46.163.81.128/27 ip4:81.27.166.251/32 ip4:130.180.103.122 ip4:2.202.40.238 a:post.selbstdenker.com include:spf.srv2.de ip4:195.185.209.50 -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

pass

p=reject (_dmarc.bestwestern.de)

Found

Record
v=DMARC1; p=reject; sp=reject; rua=mailto:746f70c3-57c6-443c-898b-46ab79789165@eu1.smtp.az.brand.darktrace.com; aspf=s;
Found at
_dmarc.bestwestern.de
External report address
mailto:746f70c3-57c6-443c-898b-46ab79789165@eu1.smtp.az.brand.darktrace.com (authorized)
TagValueMeaning
vDMARC1Version
prejectPolicy
sprejectSubdomain policy
ruamailto:746f70c3-57c6-443c-898b-46ab79789165@eu1.smtp.az.brand.darktrace.comAggregate report addresses
aspfsSPF 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:746f70c3-57c6-443c-898b-46ab79789165@eu1.smtp.az.brand.darktrace.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: selector1

Found

Selectors
selector1
_domainkey
NOERROR
SelectorKeyFlags
selector1RSA 1024 bits

Checks

  • ✓ Keys found: selector1 #7
    DKIM keys found for this domain with selectors: selector1
  • !
    1024-bit DKIM key
    1024-bit RSA keys are the minimum and are considered weak today: selector1 (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

1 mail server

Found

PriorityHostRecordsReverse DNS
10bestwestern-de.mail.protection.outlook.comA 52.101.170.0 A 52.101.168.0 A 52.101.170.1 A 52.101.170.2 AAAA 2a01:111:f403:ca38::a AAAA 2a01:111:f403:ca21::e AAAA 2a01:111:f403:ca04::4 AAAA 2a01:111:f403:ca48::8mail-fr5p281cu00500.inbound.protection.outlook.com ✓ mail-beup281cu00100.inbound.protection.outlook.com ✓ mail-fr4p281cu03101.inbound.protection.outlook.com ✓ mail-fr6p281cu00202.inbound.protection.outlook.com ✓ mail-wa4pr05cu00102.inbound.protection.outlook.com ✓ mail-matpr04cu00306.inbound.protection.outlook.com ✓ mail-db4pr02cu00204.inbound.protection.outlook.com ✓ mail-miypr02cu00100.inbound.protection.outlook.com ✓

Checks

  • ✓ 1 MX record #9
    Found 1 MX records for this domain.
  • ✓ All hosts resolve #10
    All MX records resolve to valid IP addresses.
  • ✓ All hosts have IPv6 #11
    All MX records resolve to IPv6 addresses.
  • !
    Single MX host, no backup
    Only one MX record found. For better email reliability, consider adding at least one backup MX server.
    #12
  • ✓ At most 5 MX records #13
    Found 1 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 8 MX addresss have a PTR record that resolves back to them.

TLS

warn

no MTA-STS · TLS-RPT · DANE on 0 of 1 MX hosts

Found

TLS-RPT record
v=TLSRPTv1; rua=mailto:746f70c3-57c6-443c-898b-46ab79789165@eu1.smtp.az.brand.darktrace.com

DANE (TLSA records)

MX hostTLSADNSSEC
bestwestern-de.mail.protection.outlook.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
  • ✓ Reports enabled #35
    TLS reports are sent to: mailto:746f70c3-57c6-443c-898b-46ab79789165@eu1.smtp.az.brand.darktrace.com
  • 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