1. Introduction Microsoft recently announced that Exchange Web Services (EWS) in Exchange Online will be fully deprecated by October 1, 2026. This means that all applications, scripts, and integrations relying on EWS will stop working. You can react to EWS Deprecation Exchange Online with MS Graph API! If your business still depends on EWS, it’s […]
Microsoft Introduces New Exchange Online Tenant Outbound Email Limits
Microsoft recently announced new tenant-level outbound email limits for Exchange Online. These limits, referred to as Tenant External Recipient Rate Limits (TERRL), regulate the number of emails that a tenant can send to external recipients per day. The limits are calculated based on the number of licensed email users within the tenant. While most organizations […]
Is Your Exchange Server Accepting Emails from Any Microsoft 365 Tenant? Improve your Exchange Hybrid inbound Mail security know!
How can you boost your Exchange Hybrid inbound mail security? In a hybrid Exchange environment, ensuring that only authorized messages reach your on-premises Exchange servers is crucial for security. If your MX record points to Office 365, you should configure your firewall to block all inbound email traffic except from Microsoft’s public IP addresses. That […]
Secure Mailbox Access with Microsoft Graph & Entra ID | 🚀 The Ultimate Guide
Introduction Managing mailbox access securely in a Microsoft 365 environment can be challenging, especially when dealing with automation and API-based access. This is where my PowerShell script comes in: a robust, secure, and dynamically adaptable way to provision an Entra ID application with granular access control to a single mailbox using Microsoft Graph and Exchange […]
Mailbox Migration from Exchange Online to On-Prem Fails? Fix the Issue in Minutes!
Mailbox Migration from Exchange Online to On-Prem Fails? Acommon issue is an ExchangeGUID mismatch. This occurs when the ExchangeGUID does not match between Exchange Online and on-premises Exchange, causing the move request to fail. In this guide, we’ll walk through how to correctly synchronize the ExchangeGUID and ensure a smooth migration using PowerShell, based on […]