M. Omer Siddiqui's Blog

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  • Blog Post: Microsoft Exchange 2016 Initial outline

    Microsoft has recently released an initial look at Exchange 2016 architecture and Exchange team has written an excellent article which provides an initial (subject to change) view of the architecture. This architecture is described at: Exchange Server 2016 Architecture http://blogs.technet.com/b/exchange...
  • Blog Post: Microsoft Exchange team blog about Large message sizes in Office 365

    Recently Microsoft Exchange team has written a blog about large messages in Office 365. I see many customers asking for bigger message size like 100MB and should review this blog. Office 365 now supports larger email messages—up to 150 MB http://blogs.office.com/2015/04/15/office-365-now-supports-larger...
  • Blog Post: Microsoft Exchange 2013 and ADRMS Integration

    I recently did an Exchange 2013 deployment at one of our customers and also integrated with ADRMS so I thought to outline the high level integration steps to assist others. 1. Verify Exchange Servers in Microsoft Exchange Security Groups OU contain your Exchange servers. 2. Modify the default AD RMS...
  • Blog Post: Best practices for Infrastructure Planning and Design

    Download best practices for Infrastructure Planning and Design for products such as Microsoft Forefront Unified Access Gateway, Windows Server 2008 R2, Hyper-V, SQL Server 2008, Exchange Online, SharePoint Online, System Center, and much more from the IPD site on TechNet. Download at http://www.microsoft...
  • Blog Post: Microsoft Exchange Hosted Messaging (HMC) VS Address List Segregation

    While many organizations are interested in having an Address List Segregation solution, they should clearly understand that this is not a commercial solution and Microsoft Hosted Messaging and Collaboration Solution (aka HMC) stands as the commercial solution. The last version currently available for...
  • Blog Post: CalCheck - The Outlook Calendar Checking Tool

    Over the past year or so I have been working on this tool - adding functionality and checks based off my experience as an Outlook engineer, and from suggestions given by other engineers. Well, this February the tool has been released so that all our customers can download and use it to check for potential...
  • Blog Post: Exchange 2010 SP2 RU1 and CAS-to-CAS Proxy Incompatibility

    We wanted to give you a heads up regarding a change in CAS to CAS proxy behavior between servers running Exchange 2010 SP2 RU1 and servers running older versions of Exchange. The SP2 RU1 package introduced a change to the user context cookie which is used in CAS -to-CAS proxying. An unfortunate side...
  • Blog Post: DAG: Beyond the “A”

    We all know that in the Microsoft Exchange world DAG stands for “Database Availability Group”. Database – because on a highly available Exchange 2010 Mailbox server, the database , not the server, is the unit of availability and it is the database that can be failed over or switched over between multiple...
  • Blog Post: ESE Access to Exchange: Spamcops!

    It’s not easy being a spam cop. But the folks on the Forefront Online Protection for Exchange (FOPE) team love it! Their passion for being investigators and transport experts has translated into measurable impacts to help safeguard customers’ inbound, outbound and internal business mail from spam, viruses...
  • Blog Post: OWA Cross-Site Silent Redirection in Exchange 2010 SP2

    By now, many of you have seen the articles that discussed Address Book Policies , hosting changes , and the Hybrid Configuration Wizard , but deep down I know you all have been hoping that we would discuss the most sought after feature that we decided to include in Exchange 2010 SP2. What’s that you...
  • Blog Post: Announcing Enhanced Hardware Virtualization Support for Exchange 2010

    The Microsoft Exchange team is enhancing positioning by including additional supported scenarios regarding Exchange Server 2010 running under hardware virtualization software. As of today, the following support scenarios are being updated, for Exchange 2010 SP1, and later: The Unified Messaging server...
  • Blog Post: Released: v17.8 of the Exchange 2010 Mailbox Server Role Requirements Calculator

    On October 12, we have released a minor update to the Exchange 2010 Mailbox Server Role Requirements Calculator that includes enhancements like 3TB disk support and new processor core options. In addition, there are several bug fixes. Please go to our Mailbox Server Role Storage Requirements Calculator...
  • Blog Post: Announcing the Exchange Client Network Bandwidth Calculator Beta

    I am extremely pleased to announce that the all new Exchange Client Bandwidth Calculator Beta is available for download!! Over the past 12 months we have been working on a new calculator to help with Exchange client network bandwidth approximation. This new calculator is based on all new prediction data...
  • Blog Post: MEC 2012 registration is open!

    I hope those of you who signed up for more information already saw the email about Microsoft Exchange Conference 2012 (MEC) registration. The lost conference is back, taking place September 24-26 in Orlando, Florida at the Gaylord Palms Resort & Convention Center. Kudos to Dan Bobke for narrowing...
  • Blog Post: Released: Update Rollup 1 for Exchange 2010 Service Pack 2

    The Exchange CXP team released Update Rollup 1 for Exchange Server 2010 SP2 to the Download Center. This update contains a number of customer-reported and internally found issues since the release of SP2. See KB 2645995 : Description of Update Rollup 1 for Exchange Server 2010 Service Pack 2' for more...
  • Blog Post: Announcement: Upcoming Microsoft webcast on daylight saving time changes in Russia

    Here's an interesting webcast we have coming up this week... This October Russia will not "fall back" and will essentially remain on summer time. This change has widespread implications to all connected information systems. In this webcast geared toward IT Professionals, we'll walk through...