After the success of Microsoft Exchange Server 2003, the Microsoft Exchange team was pondering what the next-generation Exchange Server should look like. We had several high-level goals, which we won't go into in this blog, but let's look at a few specific Read More

Routing changes recap By now you're probably aware of the basics of Exchange Server 2007 routing: No more routing groups (except for legacy purposes) No more routing group connectors (except for legacy purposes) Uses AD sites and site links instead Read More

We have had some requests to talk more about the process to implement TLS between two Exchange organizations. Here it is! The following walk-through should help you do this. Note that those instructions apply to Exchange Server 2000/2003. We will Read More

When multiple paths exist to a destination, Exchange Server 2007 Routing uses deterministic algorithms to choose one of the paths. The algorithms are deterministic because one of the paths is always chosen (as long as the contributing factors do not Read More

This might have gone unnoticed - but we have two Exchange Server 2007 transport architecture diagrams available for your viewing pleasure: Exchange2007 Edge Transport Role Architecture Exchange2007 Hub Transport Role Architecture You can Read More

Have you tried the "Exchange Mail Flow Troubleshooter" in Exchange Troubleshooting Assistant v1.0 (ExTRA)? This is a new troubleshooter that you can use to troubleshoot common mail flow problems you see on Exchange servers. It is designed to identify Read More

If you are writing an SMTP agent, you might find it instructive to learn to speak SMTP yourself, both to aid debugging and to get a feel for what is happening "under the hood" when Exchange receives a message from the internet.  This is a lot Read More

Today we give you about 5 minutes of Jesse Dougherty, where he talks about Exchange 2007 Security and Transport. You can get to the video here: - The Exchange Team Read More

This blog post is a troubleshooting tip to tackle messages sitting in the Messages awaiting directory lookup queue of your Exchange 2000 / 2003 server. Also known as the Pre-categorization queue, "Messages awaiting directory lookup" queue is the queue Read More

Hi All, I thought I would introduce myself to the BLOG-O-Sphere, my name is Scott Roberts and I'm a Software Developer in Test for the Exchange Sustained Engineering team. One of my responsibilities on the Exchange team includes being part of a team Read More

Summary In order to clean up Routing Engine’s Cache, we no longer have to recommend customers’ to shut down all their Exchange Servers simultaneously in the entire org.  This was required to force concurrent destruction of Org object that lives Read More

Exchange 2003 Server SP2 rounds out the anti-spam capabilities of Exchange Server 2003. With addition of Sender ID and IMF filters Exchange server is now capable of protecting an Exchange organization from many spam attack vectors. The flexible, Read More

You may already know that Exchange 2003 SP2 includes a new feature for SenderID support.  SenderID (http://www.microsoft.com/senderid) is the e-mail authentication framework that targets one of the most common security issues in the world of SMTP Read More

By this time, you all must be already aware of new anti-spam features provided in Exchange Server 2003 SP2. Alexander Nikolayev discusses all the anti-spam features of Exchange server 2003 SP2 in his article at: http://blogs.technet.com/exchange/archive/2005/07/18/407838.aspx Read More

"Spam is our e-mail customers' No. 1 complaint today, and Microsoft is innovating on many different fronts to eradicate it" - Bill Gates. With the release of Exchange 2003 Server SP2 Microsoft and the Exchange Server Product Unit are taking another Read More