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  • Blog Post: Deep Sixing PST Files

    A little over two years ago we wrote about removing PSTs from your organization and gave you a tool to assist you with that endeavor. .PST, Time to Walk the Plank . Since then, we’ve updated the tool with some new features and functionality. In this blog, we are going to give you: More reasons to get...
  • Blog Post: Ask the Perf Guy: How big is too BIG?

    We’ve seen an increasing amount of interest lately in deployment of Exchange 2013 on “large” servers. By large, I mean servers that contain significantly more CPU or memory resources than what the product was designed to utilize. I thought it might be time for a reminder of our scalability recommendations...
  • Blog Post: Exchange 2013 Calculator Updates

    Today, we released an updated version of the Exchange 2013 Server Role Requirements Calculator . In addition to numerous bug fixes, this version includes new functionality: CPU utilization table, ReplayLagManager support, MaximumPreferredActiveDatabases support, Restore-DatabaseAvailabilityGroup scenario...
  • Blog Post: Configuring Multiple OWA/ECP Virtual Directories on the Exchange 2013 Client Access Server Role

    We have previously published guidance for setting up multiple OWA and ECP virtual directories for Exchange Server 2007 and 2010, and now it is the turn of Exchange Server 2013. The eagle eyed amongst you may spot some copy and paste from previous blogs on the subject, and well frankly, you’d be correct...
  • Blog Post: OWA Forms Based Auth Logoff Changes in Exchange 2013 Cumulative Update 9 – And Good News for TMG Customers

    Update - 2/9/15 : Since publishing this blog we made a decision to push one aspect of this change to CU9 to allow some partners a little more time to adapt to this new behavior. The new signout.aspx code is still shipping in CU8, but we are not changing to the new logoff behavior, that is sending the...
  • 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, where...
  • 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...
  • 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: Upgrading Exchange ActiveSync to Exchange 2010

    Many of you have been asking how you can upgrade your existing Exchange environment to Exchange 2010 from a client access perspective. For most of you, this will also mean coexisting with legacy Exchange and Exchange 2010 for a period of time. My first blog article in this series discussed the overall...
  • Blog Post: How Exchange 2007 CAS Proxying works for ActiveSync

    As a last part in my series of posts covering Exchange 2007 CAS Proxying and Redirection (see previous posts here and here ) - I wanted to cover Proxying for ActiveSync. There are three steps involved in handling a request: Determining whether to proxy a given request Proxying the request Causing the...
  • Blog Post: IMAP4 and Exchange 2010 RTM

    I'd like to take the time to highlight the significant improvements in the performance of the Internet Message Access Protocol 4 (IMAP4) in Exchange 2010, and also emphasize the importance of knowing the mailbox size when sizing your Client Access Servers for IMAP4 users. These results, and more details...
  • Blog Post: How Exchange Server 2007 CAS Proxying works for Outlook Web Access (OWA)

    Continuing on my previous post , I wanted to go into explaining how Exchange Server 2007 CAS Proxying works for Outlook Web Access (OWA). Proxying for Outlook Web Access is used when there is only one Internet-facing CAS Server. In this scenario the will be proxied to the CAS server where his mailbox...
  • Blog Post: Steps to manually recreate the sync relationship on mobile devices synchronizing with Microsoft Exchange Server

    Steps to manually recreate the sync relationship on mobile devices synchronizing with Microsoft Exchange Server In some troubleshooting scenarios, users may need to rebuild and resynchronize their partnership manually. In previous versions of Microsoft Exchange Server, if you moved your mailbox...
  • Blog Post: More fun with Logparser and Exchange logs

    Right now there is no easy way to tell who is using Entourage, RPC/HTTP (Outlook Anywhere), Exchange ActiveSync, or OWA with what frequency.  I have found Logparser to be very helpful in answering a lot of these questions.  The tool is a bit intimidating to get started but once you get the...