dbl-ev.de

Checked 21 October 2026, 22:12 UTC · via 8.8.8.8
✗Problems found
23 passed 3 warnings 1 failed 3 info

SPF

pass

SPF record published

Found

Record
v=spf1 ip4:136.243.166.225 ip4:195.201.245.113 ip4:46.182.151.142 ip4:188.40.218.142 ip4:88.99.103.31 ip6:2a01:4f8:231:58e:: ip4:78.47.231.167 ip4:116.202.6.208 ip4:116.202.1.241 include:spf.crsend.com include:spf.tixxt.com include:spf.protection.outlook.com include:inc.emailr.com -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

fail

p=none (_dmarc.dbl-ev.de)

Found

Record
v=DMARC1; p=none; sp=none; rua=mailto:94103e92cecd4d469110c2c48aba5148@dmarc-reports.cloudflare.net;
Found at
_dmarc.dbl-ev.de
External report address
mailto:94103e92cecd4d469110c2c48aba5148@dmarc-reports.cloudflare.net (authorized)
TagValueMeaning
vDMARC1Version
pnonePolicy
spnoneSubdomain policy
ruamailto:94103e92cecd4d469110c2c48aba5148@dmarc-reports.cloudflare.netAggregate 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:94103e92cecd4d469110c2c48aba5148@dmarc-reports.cloudflare.net
  • ✓ External report addresses authorized #29
    Report addresses in other domains have published their authorization.

DKIM

pass

Selectors: default, selector1, s1

Found

Selectors
default, selector1, s1
_domainkey
NOERROR
SelectorKeyFlags
defaultRSA 2048 bits
selector1RSA 2048 bits
s1RSA 2048 bitsh=sha256

Checks

  • ✓ Keys found: default, selector1, s1 #7
    DKIM keys found for this domain with selectors: default, selector1, s1
  • ✓ Strong keys #23
    DKIM keys are strong enough: default: RSA 2048 bits; selector1: RSA 2048 bits; s1: RSA 2048 bits.
  • ✓ 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
0dblev-de0i.mail.protection.outlook.comA 52.101.170.1 A 52.101.168.0 A 52.101.170.0 A 52.101.170.2 AAAA 2a01:111:f403:ca2d:: AAAA 2a01:111:f403:ca27:: AAAA 2a01:111:f403:ca2d::2 AAAA 2a01:111:f403:ca2d::1mail-fr4p281cu03101.inbound.protection.outlook.com ✓ mail-beup281cu00100.inbound.protection.outlook.com ✓ mail-fr5p281cu00500.inbound.protection.outlook.com ✓ mail-fr6p281cu00202.inbound.protection.outlook.com ✓ mail-fr5p281cu00500.inbound.protection.outlook.com ✓ mail-beup281cu00100.inbound.protection.outlook.com ✓ mail-fr6p281cu00202.inbound.protection.outlook.com ✓ mail-fr4p281cu03101.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 · no TLS-RPT · DANE on 0 of 1 MX hosts

Found

DANE (TLSA records)

MX hostTLSADNSSEC
dblev-de0i.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
  • 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

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