You Had Me At EHLO…

The Microsoft Exchange Team Blog
  1. 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...
  2. Meta Cache Database (MCDB) Setup Guide is available
    At Ignite 2017 and 2018 we began telling you about the Meta Cache Database feature we’re using in the O365 cloud service to improve scenario performance and store more mailboxes on ever-growing hard disk drives (HDDs). If you have not had a chance to join us at Ignite or would like a refresher, here are...
  3. Released: February 2019 Quarterly Exchange Updates
    Today we are announcing the availability of quarterly servicing updates, cumulative and update rollups, for all supported versions of Exchange Server. Exchange Server 2010, 2013, 2016 and 2019 all receive an update package. These updates include important fixes to address vulnerabilities being discussed in blogs and other social media outlets. While it is not the...
  4. 15 years!
    Believe it or not – as of today, this blog has been around for 15 years! That’s right… the very First post was published on February 9, 2004, with How the M: Drive came about hot on its heels. Not too shabby for something people said would never work! On this blog, we have something...
  5. 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...