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…


Exploring Exchange 2010 RPC Client Access service

In Exchange 2007, we introduced five server roles that performed distinct functions within the Exchange organization. One role in particular – the Client Access server role – introduced a variety of new Web services, including the Availability service, the Autodiscover service and Calendar Concierge services. In Exchange 2010, we have the same five server roles….


Named Properties, X-Headers, and You

EDIT 8/10/2010: Please note that this blog post covers namely the history of named properties in Exchange. For updated and current guidance of how to deal with named properties issues, please see this blog post. Coming soon to a roll up near you is a set of changes to the way that Exchange Server handles…


Exchange 2007 PrepareAD could interfere with Exchange 2003 mailflow when e-mail address space is ambiguously nonauthoritative

EDIT 1/21/2010: Aded the note mentioning that the prerequisite check rule for this condition has been added to Exchange 2007 SP2. We’ve recently encountered a small handful of customers who reported mailflow problems shortly after running Exchange 2007’s /prepareAD, or after they installed their first Exchange 2007 role (which auto-launches the pre-requisite prepareAD process).  Through…


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 to Contacts"….


Clarifying the public folder store removal on Exchange Server 2007

There’s been some confusion about how to gracefully remove a public store on an Exchange 2007 server, so I want to briefly review the topic and hopefully clear up a particular point. In order to remove the store, you must follow the steps described in this previous blog post: 1. Move the public folder replicas…


UPDATE 2: Exchange 2007 Processor and Memory Recommendations

NOTE: This article has also been published in the official Exchange 2007 documentation. We recommend that you check the documentation for the most up-to-date version. Please see the following links: Planning Processor Configurations – http://technet.microsoft.com/en-us/library/aa998874.aspx Planning Memory Configurations – http://technet.microsoft.com/en-us/library/bb738124.aspx  Planning Server Role Ratios – http://technet.microsoft.com/en-us/library/bb738159.aspx Introduction When selecting hardware for your Exchange servers, there…


Public Folder Replication Troubleshooting – Part 3: Troubleshooting Replica Deletion and Common Problems

This is a third blog post about troubleshooting public folder replication issues. In first post we covered Troubleshooting the Replication of New Changes. The second blog post covered Troubleshooting the Replication of Existing Data. This post in this series will cover Troubleshooting Replica Deletion and Common Problems. To get the full picture, please read all…


Performance troubleshooting basics

Since I occasionally troubleshoot performance problems, I thought I’d write up the basics of the process I use.   Due to the nature of this topic, this isn’t going to be a comprehensive coverage of all possible performance problems.  I just want to focus on the main process, and list a few of the things I…