Authentication Records Check for

duckduckgo.com

Instant checks for DMARC, SPF, and BIMI with clear, actionable guidance.

DMARC SPF BIMI

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Last checked about 9 hours ago

0 out of 100
Good

Domain Health Score

Your domain has basic email authentication in place. Consider strengthening your configuration for better protection.

SPF
Sender Policy Framework
30 / 30
DMARC
Domain-based Message Authentication
45 / 50
BIMI
Brand Indicators for Message Identification
0 / 20
0

DMARC Check Results

45 / 50 points

Score Breakdown

DMARC record published
+10
Syntax valid
+5
Reject policy (maximum protection)
+20
Aggregate reporting (rua) configured and verified
+10
Forensic reporting (ruf) not configured (optional)
0 / 5

DMARC Check Passed: Properly Configured

DMARC record is valid and configured correctly.

_dmarc.duckduckgo.com TXT Entry:

v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]

Policy (p)

reject

DKIM Alignment (adkim)

Relaxed (default)

SPF Alignment (aspf)

Relaxed (default)

Reporting (RUA/RUF)

Aggregate Reports

Configured
[email protected]
External Domain Verification
[email protected]

Verification successful

Learn more about aggregate reports →

Forensic Reports

Not Configured
Learn more about forensic reports →

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You can add our monitoring system alongside your existing setup. DMARC supports multiple mailto: addresses, giving you additional visibility and backup reporting.

  • Automated DMARC report processing every 5 minutes
  • Clear insights and actionable recommendations
  • Track all sending sources and authentication results
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0

BIMI Check (default selector)

0 / 20 points

Score Breakdown

BIMI record published (optional)
0 / 5

No BIMI Record Found

Publish a TXT record at default._bimi.duckduckgo.com with v=BIMI1, logo URL (l=) and optional verified mark certificate (a=).

Create BIMI Record for duckduckgo.com
0

SPF Record Check Results

30 / 30 points

Score Breakdown

SPF record published
+10
Syntax valid
+5
Hard fail policy (-all)
+10
No configuration warnings
+5

SPF record is valid.

duckduckgo.com TXT SPF Entry:

v=spf1 include:mailer.duckduckgo.com include:spf.protection.outlook.com include:duck.com -all

Syntax Check

OK

DNS Lookup Count

5 / 10 max

Root-level mechanisms requiring DNS queries: 3.

Void Lookups

0 / 2 max

Default Policy

-all

Fail: Reject emails from unauthorized servers (recommended for production)

All Authorized IP Addresses

Grouped by DNS record source (includes and sub-includes)

include:spf.mailer.duckduckgo.com
20.120.41.107
include:spf.protection.outlook.com | Microsoft 365
40.92.0.0/15
40.107.0.0/16
52.100.0.0/15
52.102.0.0/16
52.103.0.0/17
104.47.0.0/17
2a01:111:f400::/48
2a01:111:f403::/49
2a01:111:f403:8000::/51
2a01:111:f403:c000::/51
2a01:111:f403:f000::/52
include:duck.com
20.13.235.192/26
20.67.221.0/24
20.67.222.0/24
20.67.223.0/24
50.85.11.0/24
50.85.12.0/24
50.85.10.0/24

DNS Lookup Details

1
include:
mailer.duckduckgo.com
Valid

SPF record found

Lookup cost: 2
Included by duckduckgo.com

TXT Record

v=spf1 include:spf.mailer.duckduckgo.com include:spf.protection.outlook.com -all

Processed recursively per RFC 7208

2
include:
spf.mailer.duckduckgo.com
Valid

SPF record found

Lookup cost: 0
Included by mailer.duckduckgo.com

TXT Record

v=spf1 ip4:20.120.41.107 -all

Processed recursively per RFC 7208

3
include:
spf.protection.outlook.com | Microsoft 365
Valid

SPF record found

Lookup cost: 0
Included by mailer.duckduckgo.com

TXT Record

v=spf1 ip4:40.92.0.0/15 ip4:40.107.0.0/16 ip4:52.100.0.0/15 ip4:52.102.0.0/16 ip4:52.103.0.0/17 ip4:104.47.0.0/17 ip6:2a01:111:f400::/48 ip6:2a01:111:f403::/49 ip6:2a01:111:f403:8000::/51 ip6:2a01:111:f403:c000::/51 ip6:2a01:111:f403:f000::/52 -all

Processed recursively per RFC 7208

4
include:
spf.protection.outlook.com | Microsoft 365
Error

Circular reference detected

Lookup cost: 1
Included by duckduckgo.com
5
include:
duck.com
Valid

SPF record found

Lookup cost: 0
Included by duckduckgo.com

TXT Record

v=spf1 ip4:20.13.235.192/26 ip4:20.67.221.0/24 ip4:20.67.222.0/24 ip4:20.67.223.0/24 ip4:50.85.11.0/24 ip4:50.85.12.0/24 ip4:50.85.10.0/24 -all

Processed recursively per RFC 7208

Email Security Configuration

How duckduckgo.com configures email authentication

DMARC Domain Policy
Configured
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]
p=reject DKIM: relaxed SPF: relaxed Reports enabled
SPF Sender Authorization
Configured
v=spf1 include:mailer.duckduckgo.com include:spf.protection.outlook.com include:duck.com -all
-all 3 includes
BIMI Brand Indicator
Not set
No BIMI record configured for this domain

Change History

Monitoring started January 10, 2026

Configuration changes will appear here when detected

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About This Checker

What we check

We analyze your domain's email authentication: DMARC policy and alignment, SPF record and includes, and BIMI logo/CV when present.

Why it matters

Healthy authentication improves delivery and blocks spoofing. Major inbox providers increasingly require DMARC and robust SPF/DKIM practices for senders.

Included features

  • DMARC syntax, policy, and reporting validation
  • SPF record evaluation and include analysis
  • DKIM/SPF alignment interpretation
  • BIMI record and VMC detection
  • Clear setup and remediation guidance

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