Low IP Reputation - Restore Sending IP Credibility

What's Happening?

Quick Diagnosis: Identifying IP Reputation Issues

Understanding IP Infrastructure

• The platform maintains excellent IP reputation.
• No manual IP reputation management required.
• Cost-effective solution suitable for most sending volumes.
• Benefit from collective good sending practices of the community.
• Automatic load balancing across multiple high-quality IPs.
• No warm-up required — ready to send immediately.
• Professional monitoring and maintenance handled by the platform.

• Exclusive IP address assigned only to your account.
• Complete control over your IP reputation.
• Built-in SNDS monitoring available on the platform.
• Access to advanced IP analytics and reporting.
• Ideal for consistent high-volume sending (150,000+ emails/month).
• Requires proper warm-up process for optimal performance.

Step-by-Step IP Reputation Recovery

Check your IP configuration:

1. Navigate to Email Services
   • Go to Settings → Email Services.
   • Check if you have access to the Postmaster Tools tab.
   • Look for the Microsoft SNDS section.
2. Determine your IP type
   • If you see SNDS data: you have a dedicated IP.
   • If you see "IP not found in your account": you're on a shared IP (which is perfectly fine!).
3. For email header checking (if needed)
   • Send a test email to yourself.
   • View the email source to see the sending IP in headers.
   • Look for: Authentication-Results: spf=pass (sender IP is [IP])

For shared IP users (most users):

For dedicated IP users:

• Built-in monitoring
  • Go to Settings → Email Services → Postmaster Tools.
  • View your Microsoft SNDS data directly on the platform.
  • Monitor complaint rates, volume patterns, and reputation metrics.
  • Track authentication success rates.
• External reputation checkers
  • Sender Score by Validity — senderscore.org (0–100 scale)
  • Talos Intelligence by Cisco — talosintelligence.com/reputation_center
  • Google Postmaster Tools — postmaster.google.com
• Blacklist checkers
  • MXToolbox Blacklist Check
  • Spamhaus Lookup
  • MultiRBL

For shared IP users:

For dedicated IP users:

1. Monitor your SNDS data
   • Check Settings → Email Services → Postmaster Tools → Microsoft SNDS.
   • Review complaint rates (target <0.1%).
   • Monitor volume patterns and authentication success.
   • Track any reputation warnings or alerts.
2. Address blacklist issues
   • Use external tools to check for blacklist appearances.
   • Submit removal requests to relevant blacklist providers.
   • Document remediation efforts.
   • Coordinate with support if needed.
3. Implement IP warm-up (if needed)
   • Start with low volume to highly engaged contacts.
   • Gradually increase volume over 4–6 weeks.
   • Monitor SNDS data for any negative trends.

Essential list management:

1. Go to Contacts → Smart Lists.
2. Create filters to manage:
   • Unengaged contacts — separate contacts with no activity in 90+ days
   • High-engagement contacts — prioritize recent openers and clickers
3. Implement best practices
   • Use double opt-in for new subscribers.
   • Regular list hygiene maintenance.
   • Segment based on engagement levels.
   • Maintain comprehensive suppression lists.

Strengthen domain authentication:

1. Navigate to Settings → Email Services → Dedicated Domain and IP.
2. Click Verify Domain for your domain.
3. Maintain consistent "From" domain usage.
4. Keep all authentication records up to date.

Advanced Monitoring for Dedicated IP Users

1. Navigate to Settings → Email Services → Postmaster Tools.
2. Click on the Microsoft SNDS tab.
3. Review the following metrics:
   • Complaint Rate: Should be <0.1%
   • Trap Hits: Should be 0
   • Volume Patterns: Monitor for consistency
   • Authentication Success: Should be >95%
4. Set up a regular monitoring schedule (daily/weekly).
5. Document trends and changes.

Green status: Excellent reputation, continue current practices.

Yellow status: Monitor closely, optimize sending practices.

Red status: Immediate action required, review all practices.

• Add your sending domain at postmaster.google.com.
• Monitor spam rate trends (maintain <0.1%).
• Track delivery error patterns.
• Watch authentication success rates.
• Set up alerts for performance changes.

When to Consider Dedicated IP

• You consistently send >150,000 emails per month.
• You want access to detailed SNDS monitoring.
• You need complete control over IP reputation.
• Your business requires maximum deliverability control.
• You can maintain consistent sending volumes.
• You want advanced IP analytics and reporting.

Best Practices for All Users

• Engagement-based segmentation: Separate engaged from unengaged contacts.
• Regular list audits: Monthly review of contact quality.
• Double opt-in implementation: Ensure subscriber confirmation.
• Quality focus: Prioritize engaged subscribers over list size.

• Spam score testing: Test campaigns before sending.
• Clear sender identification: Use recognizable "From" names.
• Relevant content: Match subscriber expectations.
• Easy unsubscribe: Process opt-outs immediately.
• Consistent scheduling: Maintain regular sending patterns.

• Perfect authentication: Ensure SPF, DKIM, DMARC are configured.
• Domain consistency: Use the same authenticated domain.
• Mobile optimization: Ensure emails render well on all devices.
• Regular monitoring: Check authentication status monthly.

Recovery Timeline and Expectations

• Immediate: Focus on domain reputation and list quality.
• 1–2 weeks: See improvements in delivery rates.
• 1 month: Stable performance with optimized practices.
• Ongoing: Maintain best practices for continued success.

• Days 1–7: Address blacklist issues, optimize practices.
• Weeks 2–6: Monitor SNDS data, gradual improvement.
• Months 2–4: Full reputation recovery and stable performance.
• Ongoing: Continuous monitoring and optimization.

Working with Support

• Shared IP users: For general deliverability guidance and best practices.
• Dedicated IP users: For SNDS data interpretation and IP-specific issues.
• Authentication help: DNS configuration assistance.
• Dedicated IP consultation: Discuss upgrade options and requirements.
• Performance optimization: Get recommendations for your specific use case.

• Your IP setup: Shared or dedicated IP.
• Performance metrics: Delivery rates, engagement data.
• Specific issues: Bounce messages, delivery problems.
• Sending volume: Current and planned email volumes.
• SNDS data: Screenshots from your dashboard (dedicated IP users).

Still Having Issues?

The platform's infrastructure is designed to maintain excellent IP reputation automatically for shared IP users, while dedicated IP users get advanced monitoring tools built right into the platform. Focus on what you can control — domain reputation, list quality, and content optimization.

Frequently Asked Questions