Updates to Tenant External Recipient Rate Limit (TERRL) Quotas for New, Trial, and Education Tenants
🚨 The Signal: Microsoft is reducing external email recipient limits for new, trial, and free education tenants in Exchange Online to prevent abuse. This impacts outbound email capacity for specific tenant types.
The Impact
New, trial, and free education tenants are affected, facing reduced external email quotas, which poses a risk of legitimate outbound emails being blocked.
- New tenants (under 60 days) face significantly reduced external recipient quotas.
- Trial tenants will see a drastic reduction in daily external recipient limits.
- Free education tenants will have a lower weighted contribution for free licenses towards their quota.
- Legitimate outbound emails may be deferred or blocked if quotas are exceeded.
The Action
- Review current TERRL quotas for your tenant in the Exchange admin center (EAC) under Mail flow > Remote domains.
- Monitor outbound email activity, especially for new, trial, or free EDU tenants, using Exchange Online mail flow reports.
- Communicate potential outbound email limitations to users in affected tenant types.
- Consider upgrading trial or free EDU licenses to purchased plans if higher TERRL quotas are consistently required.
Domain: Exchange · Impact: medium · Workload: Exchange Online