Deliverability
IP Reputation
Continuous monitoring of IP reputation across major blocklists, provider scoring systems and internal telemetry — with remediation when it slips. Reputation is the underlying asset; everything else is scaffolding.
Overview
IP reputation is scored by every major provider, published in part by some (SNDS, Sender Score) and inferred in others. It is the single largest determinant of whether your mail sees the inbox.
Northbound monitors every IP we operate against Spamhaus, Barracuda, Invaluement, SORBS, SpamCop, UCEProtect and provider-specific systems. Listings trigger immediate investigation and remediation.
Benefits
- Continuous multi-source monitoring, not weekly checks
- Cross-referenced with our own telemetry to spot degradation early
- Remediation handled as part of operations
Technical specifications
| Blocklists monitored | Spamhaus (SBL, XBL, PBL, ZEN), Barracuda, Invaluement, SORBS, SpamCop, UCEProtect L1/L2/L3, and 20+ others |
|---|---|
| Provider signals | Google Postmaster, Microsoft SNDS, Sender Score |
Use cases
- — All dedicated IP allocations under management include reputation monitoring.
Questions
Do you monitor domain reputation too?
Yes, via Google Postmaster and inferred signals from placement panels.
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