Limiting onmicrosoft domain usage for sending emails
Outbound email limits now enforce 100 messages maximum per domain/24hours
Outbound-Mail-Volumen auf Standard-Domains jetzt auf 100 Nachrichten/24h begrenzt
Exchange Online — Microsoft 365 changes — page 3/3
102 Microsoft 365 Message Center announcements and curated “What’s new” posts for Exchange Online, newest first. Services covered include Exchange Online, Microsoft Defender XDR, Microsoft Purview, Microsoft Teams, TECHCOMMUNITY.MICROSOFT.COM, Microsoft 365 suite, Microsoft 365 apps, learn.microsoft.com. Each entry links to the change page with an AI summary (English/German), the rollout dates and the full Microsoft text.
(Updated) Retirement of Exchange Web Services in Exchange Online
EWS API shutdown enforced October 2026 with ongoing security support
EWS-Blockierung 2026 mit fortlaufender Sicherheitsunterstützung