The 100 migration batches limit and how to not run into it

As you might or might not know, in Exchange Online we have an upper limit of 100 migration batches. You can see this limit for MaxNumberOfBatches in the Exchange Online PowerShell Get-MigrationConfig: (To understand the MaxConcurrentMigrations limit of 300, you can check this blog post written by one of our migration experts, Brad Hughes.) 100…


Introducing the new migration experience from Google G Suite

Several weeks ago we added a new Microsoft 365 Roadmap item announcing our intent to add ability to migrate Google G Suite calendars and contacts to the ability to migrate mail to Office 365 using our native migration tools.  We’re excited to say that this functionality has started rolling out!  You can expect to see…


Microsoft Hybrid Agent Preview Update

As you are aware, we released the Microsoft Hybrid Agent for Exchange Server as a preview on Feb. 5th, 2019. The blog post for that release is located here. We have been busy working on a few improvements for the Hybrid Agent over that past two months and wanted to let you know of some…


Introduction to Public Folder Hierarchy Sync

Introduction The purpose of this article is to provide high level overview of hierarchy synchronization process in public folders and provide some troubleshooting steps to monitor and troubleshoot hierarchy related issues. The information presented here applies to public folder deployment in Exchange on-premises as well as Exchange Online, with any differences called out. Before we…


Exchange Online – Modern Authentication and Conditional Access Updates

We’re constantly improving the security of Office 365 products and services. Modern Authentication and Conditional Access are two of the best ways of ensuring that your clients can take advantage of authentication features like multi-factor authentication (MFA), third-party SAML identity providers, and are implementing automated access control decisions for accessing your cloud apps based on…


Investigating TLS usage for SMTP in Exchange Online

Microsoft is committed to enforcing the best security for our services. As a result, TLS1.0, TLS1.1, and 3DES were deprecated in the Office 365 service. While 3DES is currently in the process of being disabled, there is no date set for disabling TLS1.0 and TLS1.1. That said, we are working towards disabling these TLS versions…


Announcing the Public Folder Consistency Agent for Exchange Online

We are very glad to announce availability of the public folder consistency agent for public folders in Exchange Online. What is this, you ask? Read on! The agent currently works on two scenarios: Scenario 1: Stale permissions on public folders Consider a scenario where a user was given permissions on a public folder, but their…


Advanced Office 365 Routing: Locking Down Exchange On-Premises when MX points to Office 365

We often get request from customers to control mail flow routing in a hybrid deployment, for various compliance requirements. Achieving the desired routing greatly depends on where the MX record is pointed to and the involvement of 3rd party mail gateways. Also, use of Centralized Mail Transport and the two mandatory Office 365 native domains…


Retiring Unified Messaging in Exchange Online

Microsoft is retiring Unified Messaging (UM) in Exchange Online and replacing it with Cloud Voicemail and Auto Attendant services.  This impacts voicemail processing and Auto Attendant in Exchange Online for all customers using these workloads. The following servers connecting to Exchange UM Online will be transitioned by Microsoft to Cloud Voicemail on or before February…


The Microsoft Hybrid Agent Public Preview

Update 4/9/2019: to read about additional features released in the Hybrid Agent, please go here. The moment you’ve all been waiting for has arrived! We are pleased to announce the Microsoft Hybrid Agent for Exchange Server is now available for preview! We talked in some depth about the Hybrid Agent back at Ignite 2018 in…