Essential Exchange

In Problem Between Exchange Server 2007 and MS08-03 , I wrote about a problem introduced by MS08-003 that affected large Exchange environments. Last week, a hotfix was released for this problem. Surprisingly for many, it was actually an Active Directory issue! (Although, I did hear an A/D engineer say...

Over three years ago, I wrote my most popular (in terms of number of times it has been read) blog post ever: " Exchange Server 2003 and Domain Controllers - A Summary ." Since it was written in January of 2005, Exchange Server 2003 service pack 2 has been released, Windows Server 2003 service...

Recently, the question was asked on one of the mailing lists I frequent: why does Exchange Server 2007 make me create all my new distribution groups as universal groups? The answer is just a little bit convoluted. And it really only applies to so-called "enterprise" customers - those with more...

MS08-03 , an "important" February security bulletin designed to prevent Denial of Service attacks against Active Directory and ADAM (Active Directory Application Mode) apparently has some issues with Exchange 2007 in larger organizations. I first heard of this from Pete Kretche, a Systems Administrator...

Originally published in January of 2005, my blog post Exchange Server 2003 and Domain Controllers - A Summary has been the most searched-out article on my blog. While, with the release of Exchange Server 2007, the post is beginning to show it's age, the information contained in the article still...

I've seen this a couple of times now - so a blog post will make the solution searchable via Google for other folks to find. ;-) I've requested that a check for this be added to ExBPA, we'll see if that happens. The error is: Exchange is unable to mount the database that you specified. Specified...

In this article I reported on the fact (then) that single level domains were not supported in Exchange Server 2007 sp1. Microsoft, as of today (February 15, 2008) has changed their position on single-level domains and Exchange Server 2007. This is the Microsoft Exchange Team blog post on the topic. It's...

I first got really interested in Exchange Server when I started working on hosting the product for multiple companies (while using only a single server environment). In fact, I started this blog to talk mainly about hosted Exchange. My interests have expanded and I enjoy working with all of Exchange...

In other words - name and attribute resolution. Exchange Server stores almost all of its non-store-related information in Active Directory. This includes configuration for each individual Exchange server, each Virtual Server for each Exchange server, etc. Exchange places all of this information beginning...

Do you know what a flat domain is? Do you know what a single-level domain is? You may not even be aware that Active Directory supported single-level domains. If you do - then you've probably run into problems with it in the past. Now there are more problems. A flat or single-level domain is one that...