kirche-bremen.de

Checked 21 October 2026, 23:10 UTC · via 8.8.8.8
!Passed with warnings
27 passed 5 warnings 0 failed 2 info

SPF

pass

SPF record published

Found

Record
v=spf1 a mx ip4:93.191.160.0/21 ip4:193.174.240.41 ip4:195.37.138.101 include:cemsc.net include:spf.protection.outlook.com -all
DNS lookups
5 of 10
Void lookups
0 of 2

Checks

  • ✓ No deprecated ptr mechanism #1
    No ptr mechanism found in SPF record.
  • ✓ 5 of 10 DNS lookups #2
    SPF record needs 5 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=reject (_dmarc.kirche-bremen.de)

Found

Record
v=DMARC1; p=reject; pct=100; ruf=mailto:digitales@kirche-bremen.de; aspf=r; adkim=r
Found at
_dmarc.kirche-bremen.de
TagValueMeaning
vDMARC1Version
prejectPolicy
pct100Percentage of mail the policy applies to
rufmailto:digitales@kirche-bremen.deFailure 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.
  • !
    No aggregate reports (rua)
    DMARC record has no rua tag, so you receive no aggregate reports about who sends mail as your domain. Add rua=mailto:...
    #19
  • ✓ Subdomain policy: reject #20
    Subdomains are covered by policy 'reject'.
  • ✓ Report addresses in own domain #29
    All report addresses are in your own organizational domain.

DKIM

warn

Selectors: mail, selector1, selector2

Found

Selectors
mail, selector1, selector2
_domainkey
NOERROR
SelectorKeyFlags
mailRSA 1024 bits
selector1RSA 2048 bits
selector2RSA 2048 bits

Checks

  • ✓ Keys found: mail, selector1, selector2 #7
    DKIM keys found for this domain with selectors: mail, selector1, selector2
  • !
    1024-bit DKIM key
    1024-bit RSA keys are the minimum and are considered weak today: mail (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
10kirchebremen-de01e.mail.protection.outlook.comA 52.101.170.0 A 52.101.170.2 A 52.101.168.0 A 52.101.170.1 AAAA 2a01:111:f403:ca27:: AAAA 2a01:111:f403:ca2d:: AAAA 2a01:111:f403:ca2d::1 AAAA 2a01:111:f403:ca2d::2mail-fr5p281cu00500.inbound.protection.outlook.com ✓ mail-fr6p281cu00202.inbound.protection.outlook.com ✓ mail-beup281cu00100.inbound.protection.outlook.com ✓ mail-fr4p281cu03101.inbound.protection.outlook.com ✓ mail-beup281cu00100.inbound.protection.outlook.com ✓ mail-fr5p281cu00500.inbound.protection.outlook.com ✓ mail-fr4p281cu03101.inbound.protection.outlook.com ✓ mail-fr6p281cu00202.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

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

Found

MTA-STS record
v=STSv1; id=20250902
Policy URL
https://mta-sts.kirche-bremen.de/.well-known/mta-sts.txt
Mode
enforce
Allowed MX
*.mail.protection.outlook.com
Max age
86400 seconds

DANE (TLSA records)

MX hostTLSADNSSEC
kirchebremen-de01e.mail.protection.outlook.comnone-

Checks

  • ✓ Record published #32
    MTA-STS record found with id 20250902.
  • ✓ 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.
  • !
    Not configured
    MTA-STS or DANE is used without TLS-RPT, so you get no reports when senders fail to deliver because of TLS problems. Publish _smtp._tls TXT "v=TLSRPTv1; rua=mailto:...".
    #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

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