How can SNDS, Postmaster Tools, or Talos reveal the real issue?
Microsoft SNDS:
- Shows IP reputation (green/yellow/red)
- Complaint data from Outlook users
- Trap hit indicators
- Volume and filter results
Gmail Postmaster Tools:
- Domain reputation separately from IP
- Authentication pass rates
- Spam rate (complaints)
- Encryption and delivery errors
Cisco Talos:
- IP and domain reputation scores
- Email and web reputation
- Blocklist status
- Historical reputation data
Cross-reference: Different tools show different perspectives. Agreement across tools confirms the diagnosis.
Multiple port authorities rating your fleet. Consistent ratings confirm the assessment.
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