USN Rollbacks and Active Directory Replication Issues

I recently worked on an interesting issue where certain Distribution Groups (DGs) in the Active Directory (AD) were not replicating properly with the Exchange 5.5 Directory Service (DS).  After adding several members to a DG in the AD, the changes did not replicate to the 5.5 server.  One particularly problematic DG, lets call it Execs,…


How Daylight Savings Time Date Changes affect Scheduling in Outlook Client

Some countries like Chile, Brazil and Israel adopt a variable Daylight Saving Time dates (DST). The initial and end dates change every year following the government decision.   As a result, users in these countries experience inconvenience with their Outlook meetings and appointments being off by one hour. Every year, we receive numerous calls from…


Introducing the Exchange Solution Reviewed Program (ESRP) – Storage

The Exchange Solution Reviewed Program – Storage (ESRP) is a Microsoft Exchange Server program designed to facilitate third party storage testing and solution publishing for Exchange Server.  The program combines a storage testing harness (Jetstress) with solution publishing guidelines.  Microsoft Gold Certified or Certified Storage Partners can use the ESRP framework provided to test their…


x64 bit hardware will run Exchange 2003 on 32 bit Windows

It seems we have some badly worded docs on some Microsoft sites that may lead you to believe that you cannot run Exchange 2003 on x64 bit systems. Also the release notes seem to be in error as well. Let me assure you that this information is incorrect and is being corrected.   You can…


Exchange 2000/2003 Front End Server Logon Process

Working in Support Services, I get to explain this subject a lot, so I thought I’d share it here too. This blog post will explain what the flow of the client access a BE server through a FE server looks like, including access to domain controllers that has to happen as part of this process….


How are we doing with this blog?

It’s been a while since we posted something about this blog site itself.   We wanted to gather some direct feedback from you, our readers, on how we are doing with this blog. Be honest! What could we improve? Here are some of the areas that we are interested in hearing about:   – How…


Are large messages slowing your Exchange server down?

As Ewan mentioned a little while ago, there are some pretty extreme things going on in some our customer’s Exchange environments.  One of the things that I could definitely relate to was the customer who sent a message that was 2.4GB that was successfully delivered.  While Exchange is quite capable of transferring huge messages, using…


Exchange Server 2003 Service Pack 2 DSProxy Referral Process Changes

Pre-Exchange Server 2003 Service Pack 2 Behavior Prior to Exchange Server 2003 Service Pack 2, Outlook MAPI clients would receive either a referral to a global catalog server or use the Exchange server to proxy directory related requests; specifically, Outlook 2000 clients and above support and utilize the DSProxy Referral process by default (with the…


New additions to the ‘Analyzer’ Tool Family

Last year, we delivered the Microsoft Exchange Server Best Practices Analyzer, or ExBPA for short.  Since then we’ve made several upgrades to that tool as well as published monthly updates to the validations the tool does.  The feedback loop that has been established between the product development team, our support engineers, and customers has been…