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  • Blog Post: OAB Improvements in Exchange 2013 Cumulative Update 7

    Note : Cumulative Update 7 (CU7) for Exchange Server 2013 will be released soon TM . Back in May , I discussed the changes we introduced in Exchange 2013 Cumulative Update 5. Specifically with CU5 and later, an OAB can only be assigned (or linked) to a single OAB generation mailbox. This architectural...
  • Blog Post: Come get your Calculator Updates!

    Today, we released updated versions of both the Exchange 2010 Server Role Requirements Calculator and the Exchange 2013 Server Role Requirements Calculator . The Exchange 2010 version is an incremental update and only includes minor bug fixes. You can view what changes have been made, or download the...
  • Blog Post: Outlook Connectivity with MAPI over HTTP

    Among the many new features delivered in Exchange 2013 SP1 is a new method of connectivity to Outlook we refer to as MAPI over HTTP (or MAPI/HTTP for short). We’ve seen a lot of interest about this new connection method and today we’ll give you a full explanation of what it is, what it provides...
  • Blog Post: The Preferred Architecture

    During my session at the recent Microsoft Exchange Conference (MEC), I revealed Microsoft’s preferred architecture (PA) for Exchange Server 2013. The PA is the Exchange Engineering Team’s prescriptive approach to what we believe is the optimum deployment architecture for Exchange 2013, and one that is...
  • Blog Post: Certificate Planning in Exchange 2013

    Now that we understand the load balancing and namespace planning principles and how clients connect in an Exchange 2013 environment that has Exchange 2007 and/or Exchange 2010 deployed, the proper certificates can be constructed and deployed as part of the upgrade process. Of course it goes without saying...
  • Blog Post: Client Connectivity in an Exchange 2013 Coexistence Environment

    This article is part 3 in a series that discusses namespace planning , load balancing principles , client connectivity, and certificate planning. Over the last several months, we have routinely fielded questions on how various clients connect to the infrastructure once Exchange 2013 is deployed. Our...
  • Blog Post: Load Balancing in Exchange 2013

    This article is part 2 in a series that discusses namespace planning , load balancing principles, client connectivity , and certificate planning. Load Balancing Unlike previous versions of Exchange, Exchange 2013 no longer requires session affinity at the load balancing layer. To understand...
  • Blog Post: Namespace Planning in Exchange 2013

    A while back we promised an article on namespace planning and load balancing principles with Exchange 2013. We’re finally going to fulfill that promise as a series of articles. The articles will span several topics, including namespace planning, load balancing , client connectivity coexistence , and...
  • Blog Post: GAL Photos in Exchange 2010 and Outlook 2010

    Over the years, displaying recipient photographs in the Global Address List (GAL) has been a frequently-requested feature, high on the wish lists of many Exchange folks. Particularly in large organizations or geographically dispersed teams, it's great to be able to put a face to a name for people you...
  • Blog Post: Secure Messaging with S/MIME and OWA on Exchange Server 2007 SP1

    S/MIME support for Exchange Outlook Web Access (OWA) was introduced in Exchange 2003. In Exchange 2007 SP1, we are adding S/MIME support back and making it more reliable and powerful. Below, is a short introduction to S/MIME and simple end-to-end steps for how to use S/MIME with OWA on Exchange Server...
  • Blog Post: EWS CAS to CAS Request Proxying

    In Exchange Server 2007 SP1, the EWS team added a new feature called EWS Request Proxying.  It is sometimes also referred to as EWS Proxy or HTTP Proxy.  Not much has been said about this feature, but if you care about performance, it is important to understand why it is there, why you want...
  • Blog Post: A script to troubleshoot issues with Exchange ActiveSync

    ActiveSyncReport script Download The Exchange support team relatively frequently receives cases where mobile devices using Exchange ActiveSync (EAS) protocol send too many requests to Exchange server resulting in a situation where server runs out of resources, effectively causing a ‘denial...
  • Blog Post: What’s new with Microsoft Remote Connectivity Analyzer? A lot!

    Have you ever gotten a call from someone you know whose Outlook client is having trouble connecting to their email server? Don’t you just wish you had a tool that you could send to them that would walk them through a connectivity test and provide a simple way for them to send the results back to you...
  • Blog Post: ExRCA: Now supporting 10 additional languages

    Last year, we announced the Exchange Remote Connectivity Analyzer and usage continues to grow as people become aware of this web site. Today, we are releasing a new version which will help us reach an even wider audience... We now support 10 additional languages! Here is the list of all the languages...
  • Blog Post: Using NTLM Outlook Anywhere Authentication through Forefront TMG and UAG

    The last in the series of papers I wrote in this general area has just been published and is available here . This one details the configuration you need when you want to have Outlook Anywhere use NTLM authentication when published through TMG or UAG. Why would you ever want to do this? Well, if your...
  • Blog Post: Patching the Multi-Role Server DAG

    One of the things about Exchange 2010 that many of my customers find very attractive (and I have to agree with them) is the idea of the multi-role or “all-in-one” DAG server. This means having all three of the core Exchange 2010 roles installed on all of the servers in the DAG – Mailbox, Hub Transport...
  • Blog Post: iPhone 2.0; Welcome to Exchange!

    If you've not heard; Apple released iPhone 2.0 today which includes a software update to the existing iPhones in the market (yes, we mentioned it when it was announced as well). We're thrilled to add them to the family of Exchange ActiveSync licensees that enable all sorts of devices to connect to Exchange...
  • Blog Post: Outlook Anywhere runs best on Windows 2008 R2

    We recently compared the performance of the Exchange 2010 Client Access role supporting Outlook Anywhere users on both Windows 2008 SP2 and Windows 2008 R2, and found that the improvements the Windows Team has made in R2 more than doubles the number of concurrent users a given server can support, assuming...
  • Blog Post: Getting the Most Out of Your Microsoft Exchange Server 2007 Experience with Mobile Devices

    Business users are increasingly on the move and many of them want to take their Exchange mailbox data with them. Exchange Server 2007 provides built in mobile access through Exchange ActiveSync. Users can synchronize their email messages, contacts, calendar, and task data directly to their Exchange ActiveSync...
  • Blog Post: Configuration tips and common troubleshooting steps for multiple forest deployment of Autodiscover service

    Overview The Autodiscover service for Microsoft Exchange Server 2007 provides automatic profile configuration for Microsoft Office Outlook 2007 clients that are connected to your Exchange messaging environment. When you install the Client Access server (CAS) role on a computer running Exchange...
  • Blog Post: The "Inside Microsoft Exchange 2007 Web Services" book has arrived!

    The Exchange Web Services team is proud to announce that MS Press has released the first book describing the new unifying API in Exchange 2007. Authored exclusively by members of the Exchange Team, this book is a hefty 928 pages filled with in-depth coverage of messaging, folders, calendaring, contacts...
  • Blog Post: Publish S/MIME certificates for external contacts to Active Directory for use with Exchange Server 2007

    In the past, if you wished to use S/MIME for e-mail encryption with an external recipient, you would add the recipient to your Contacts folder. This was typically done by having the recipient send you a digitally signed item and then right click on the recipient in the From field and click "Save...
  • Blog Post: Log Parser Studio 2.0 is now available

    Download Since the initial release of Log Parser Studio (LPS) there have been over 30,000 downloads and thousands of customers use the tool on a daily basis. In Exchange support many of our engineers use the tool to solve real world issues every day and in turn share with our customers, empowering...
  • Blog Post: Default settings for Exchange-related virtual directories in Exchange Server 2007

    One of the most common questions I'm asked is if we have any resources that document the default settings for the Exchange-related virtual directories in Exchange 2007 - specifically with regards to the authentication and SSL settings. This aims to address that need should you find yourself in a situation...
  • Blog Post: Loadgen 2010 (Beta Preview) now available

    We have released the Exchange Load Generator 2010 Beta to our downloads site. Exchange Load Generator 2010 Beta (64 bit) Exchange Load Generator 2010 Beta (32 bit) There have been several changes made since the last available build. Some of the "coolest" ones are listed below. Changes ...