⚠️ Attention Znuny Admins: Important Changes to Exchange Online Limits ⚠️
Microsoft has updated the sending limits for Exchange Online, which may impact your Znuny environment.
Familiarize yourself with these changes to ensure continued optimal performance.
Major updates include:
- Recipient rate limit increased to 30 messages per minute (up from 10).
- Maximum recipients per message raised to 500 (from 250 for internal, 50 for external).
- Daily sending limit boosted to 10,000 messages (was 5,000).
- Mailbox size and attachment limits remain unchanged.
For a detailed breakdown, check out the publicly available article: https://learn.microsoft.com/en-us/office365/servicedescriptions/exchange-online-service-description/exchange-online-limits#sending-limits-1
To help you, until we've integrated the module, install the publicly available Znuny-SMTPRateLimit. You can install this via
the package manager. The default settings are already optimized.
Stay informed and adapt your Znuny configuration accordingly to maintain seamless email communication within your organization.