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

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 Orlando, if you want a refresher on what we covered there you can see that…


Giving you more control over public folder migration requests

In our continued efforts to improve the reliability, speed and administration experience of public folder migration, we are very glad to announce the availability of Remove-PublicFolderMailboxMigrationRequest cmdlet for the use of Exchange Online tenant administrators. The cmdlet will help tenant administrator remove individual public folder mailbox migration request, which is very helpful in scenarios where…


How to work with Inactive Mailboxes

It usually starts with the following question: Is there a way to release the license of an Exchange Online user that left the company, but at the same time, keep the mailbox content? To get this done, we have a feature called Inactive mailboxes, but as we have seen some of our customers being a…


Monitoring Exchange Online User Client Access and Usage with Graph, PowerShell and Power BI

Introduction As a Tenant Admin of an Office 365 Exchange Online organization, have you ever needed to monitor who, what, and where someone is connecting to your Exchange Online resources, like accessing mailboxes on mobile devices? I ran into this request a few weeks ago, from one of my customers. After hours of research, and…


Troubleshooting IMAP Migrations to Office 365

During my day to day work as a part of support organization, I work with and help troubleshoot mailbox migrations very often. One type of migrations that we see quite often is IMAP migrations. I wanted to put together an overview of IMAP migration good practices as well as troubleshooting tips related to IMAP migrations….


Introducing the Exchange Online Fiddler Extension

Working in support at Microsoft, you get to deal with a lot of organizations who are migrating to Exchange Online. This type of migration dramatically changes how web traffic flows in the organization as the traffic moves away from Exchange on the Local Area Network to servers hosted by Microsoft in a Microsoft Data Center,…


Announcing support to migrate up to 250K public folders from Exchange On-Premises to Exchange Online

In an earlier post, we announced we were increasing the maximum number of public folders that could be migrated from Exchange Server 2010 to Exchange Online to 250K. We also highlighted in that post that the migration of public folders on Exchange Server 2013 and 2016 were limited to 100K. We’ve been working hard to…


Microsoft Ignite 2018 – The Recap

Microsoft Ignite 2018 ended a few weeks ago, and what a great event it was. It was great to see so many of our customers, partners and friends there – thank you for coming to our sessions, thank you for coming to the booth, thank you for hanging out with us whenever the opportunity arose…