Report Details

Report Metadata
Report ID:
d2c4197e69814d3e93c321c8471fba15
Domain:
dfliedelt-immobilien.com
Reporter:
Enterprise Outlook (dmarcreport@microsoft.com)
Status:
processed
Created:
2026-04-02 11:52:58
Processed:
2026-04-02 11:53:38
Claude AI Analysis
LOW
Summary: All 5 emails from dfliedelt-immobilien.com passed SPF and DKIM authentication successfully, with 100% compliance from two authorized IP addresses (69.169.224.1 and 69.169.224.5). The domain has a strict 'reject' policy implemented with relaxed alignment, which is functioning correctly with no authentication failures or unauthorized sending attempts detected in this reporting period.
What's Working Well
  • Perfect authentication record: 100% (5/5) of emails passed both SPF and DKIM authentication
  • Strict 'reject' policy successfully implemented, providing maximum protection against domain spoofing
  • Consistent sending pattern from only two IP addresses (69.169.224.1 and 69.169.224.5) indicates controlled, authorized email infrastructure
  • Zero quarantined or rejected messages indicates proper alignment between your DMARC policy and legitimate sending practices
  • No unauthorized sending attempts detected, suggesting your domain is not currently being actively spoofed
  • Relaxed alignment mode is working effectively with no alignment failures
  • Reporter (Enterprise Outlook) is successfully generating and delivering DMARC reports, confirming proper RUA configuration
Concrete Action Items
Verify IP Address Ownership and Documentation LOW

Description: Confirm that both sending IP addresses belong to your authorized email infrastructure and are properly documented. The IP range 69.169.224.x suggests a specific email service provider.

Steps to Take:

  1. Perform reverse DNS lookup on 69.169.224.1 and 69.169.224.5 to identify the mail server hostnames
  2. Verify these IPs match your documented email service provider (ESP) or mail server infrastructure
  3. Document these IPs in your email infrastructure configuration management database
  4. Confirm with your IT team or ESP that these are the only expected sending sources
  5. If using a third-party ESP, verify your contract and service configuration are current

Affected IPs: 69.169.224.1, 69.169.224.5

Expected Outcome: Complete documentation of authorized sending infrastructure, enabling faster incident response if unauthorized sources appear in future reports
Evaluate DMARC Alignment Mode Upgrade LOW

Description: Current policy uses relaxed (r) alignment for both SPF and DKIM. Consider whether strict (s) alignment would provide enhanced security without disrupting legitimate email flow.

Steps to Take:

  1. Review organizational domain structure (subdomains used for sending)
  2. Assess whether all legitimate email uses exact domain match (dfliedelt-immobilien.com) or includes subdomains
  3. Test strict alignment in a staging environment if possible
  4. If no subdomains are used for sending, update DMARC record to 'adkim=s; aspf=s'
  5. Monitor reports for 2-4 weeks after any change to ensure no disruption
Expected Outcome: Enhanced security posture by requiring exact domain matching, preventing potential subdomain abuse while maintaining legitimate email delivery
Implement Automated DMARC Report Monitoring MEDIUM

Description: Establish automated monitoring and alerting for DMARC reports to quickly identify authentication failures or unauthorized sending attempts.

Steps to Take:

  1. Select a DMARC monitoring solution (commercial service or open-source tool like parsedmarc)
  2. Configure automated ingestion of DMARC aggregate reports from the RUA email address
  3. Set up alerts for: authentication failures, new sending sources, volume anomalies, policy violations
  4. Create a dashboard for weekly review of authentication trends
  5. Establish a baseline of normal sending patterns (current: 2 IPs, low volume)
Expected Outcome: Real-time visibility into email authentication status with immediate alerts for potential security incidents or configuration issues
Validate DMARC Record Configuration Completeness LOW

Description: Ensure your DMARC record includes all recommended tags for comprehensive reporting and policy enforcement.

Steps to Take:

  1. Retrieve current DMARC record: dig TXT _dmarc.dfliedelt-immobilien.com
  2. Verify the record includes: v=DMARC1; p=reject; rua=<reporting-address>; ruf=<forensic-address>; fo=1; pct=100
  3. Confirm 'ruf' tag is present for forensic failure reports
  4. Verify 'fo=1' is set to generate reports for any authentication failure
  5. Ensure 'pct=100' to apply policy to all messages
  6. Add 'ri=86400' if not present to specify daily aggregate reports
Expected Outcome: Complete DMARC configuration ensuring maximum visibility into authentication events and consistent policy application
Conduct Quarterly Email Authentication Audit MEDIUM

Description: Schedule regular audits to ensure continued compliance and identify optimization opportunities.

Steps to Take:

  1. Create a calendar reminder for quarterly DMARC reviews (every 3 months)
  2. Review aggregate sending volume and source diversity trends
  3. Verify SPF record still includes all authorized senders and hasn't exceeded 10 DNS lookups
  4. Confirm DKIM keys are rotated according to security policy (recommend annually)
  5. Check for any changes in email infrastructure that require DMARC updates
  6. Review rejected/quarantined messages (if any) to identify legitimate vs. malicious sources
Expected Outcome: Maintained email authentication effectiveness and early detection of configuration drift or emerging security issues
Immediate Next Steps
  1. Perform reverse DNS verification on 69.169.224.1 and 69.169.224.5 to confirm their identity and proper documentation
  2. Review and document your complete email infrastructure including these IPs in your IT asset inventory
  3. Set up automated DMARC report monitoring within the next 1-2 weeks to reduce manual analysis burden
  4. Retrieve and validate your current DMARC DNS record to ensure all recommended tags are present
  5. Schedule a quarterly review date (3 months from now) for comprehensive email authentication audit
  6. Consider testing strict alignment mode if your email architecture supports it for enhanced security
  7. Continue monitoring future reports for any changes in sending patterns or new IP addresses
General Recommendations:
  • Continue monitoring DMARC reports regularly to maintain visibility into email authentication patterns
  • Consider implementing aggregate report analysis automation to detect trends over longer periods
  • Document the two authorized IP addresses (69.169.224.1 and 69.169.224.5) in your email infrastructure inventory
  • Evaluate whether transitioning from relaxed (r) to strict (s) alignment mode would be appropriate for your security posture
  • Ensure forensic (ruf) reporting is configured to receive detailed failure reports if authentication issues occur
  • Maintain current SPF and DKIM configurations as they are functioning optimally
Authentication Records (2)
Source IP Hostname / Provider Count SPF DKIM Disposition
69.169.224.1 No reverse DNS 2 pass pass none
69.169.224.5 No reverse DNS 3 pass pass none
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