Recover from Outlook junk
Remediate Microsoft junking and throttling using SNDS, authentication, and list quality.
- Difficulty:
- Advanced
- Prerequisites:
- SNDS enrollment where possible, Auth samples
- Last updated:
- 2026-07-15
- Author:
- empire
Objective
Recover provider placement
Exit spam/junk at a major mailbox provider after a placement collapse.
Starting state
Outlook/Hotmail junk or Microsoft throttling is elevated
Prerequisites
- SNDS enrollment where possible
- Auth samples
Estimated time
2–4 hours
Difficulty
advanced
Required access
- ESP
- SNDS
- DNS
Inputs
- SNDS filter data
- Complaint/bounce trends
- IPs in use
Step-by-step instructions
- Inspect SNDS and samplesIdentify which IPs and time windows show filter or complaint spikes.
- RemediateFix auth, suppress complainers, and reduce volume on flagged IPs.
- Rebuild carefullyReintroduce Microsoft traffic with engaged cohorts and monitoring.
Verification
- SNDS improves
- Junk placement declines
Common mistakes
- Ignoring IP-specific SNDS while only changing content
- Move traffic off a burned shared IP?
Rollback / recovery
- Shift Microsoft volume to healthier IPs or pause
Expected outcome
Microsoft placement and acceptance stabilize.
When to escalate
- Persistent blocks after IP and list remediation