Hi Everyone I just became the Administrator for our Windows Server 2003 domain - it's a big step up from my Media Center/Xbox network at home! I have a couple of licensing question regarding Exchange 2007. As I understand it, we need: A Server Windows Server 2003 Exchange Server 2007 A Windows CAL for each user/device An Exchange CAL for each user/device Have I missed anything off here? Is the Windows Server CAL necessary if a seperate server is handling all domain-related funtions? Thanks .Dave

As always, Microsoft Licensing is a joy when it comes to Exchange 2007. The short answer to "What Do I need?" is... Just depends on what you want. I would look at the following to get an understanding of the choices. Standard/Enterprise/Hosted/Enterprise Cal Suite. How to Buy Exchange Server 2007 http://www.microsoft.com/exchange/howtobuy/licensingfaq.mspx http://www.microsoft.com/exchange/howtobuy/default.mspx http://www.microsoft.com/exchange/evaluation/editions.mspx http://www.microsoft.com/calsuites/enterprise.mspx After this, I would then find out if you have a Microsoft Rep for your company, and invite him out to explain your options in more detail.

Dave, Don't worry... you'll never fully understand MS licensing, even they don't! But regarding your question, you seem to be on target for the most part. Yes you need a server, for E2007 it needs to be 64-bit. To help you in sizing up requirements for it, you may want to check this post out at the Exchange Team Blog: http://msexchangeteam.com/archive/2007/01/16/432222.aspx You will need a licensed copy of Windows Server 2003 x64 for the OS. Depending on your requirements you will need to choose between Standard and Enterprise version. If you are doing a fairly small server, then most likely STD will meet your needs. Check the comparison chart here: http://technet2.microsoft.com/windowsserver/en/library/e3d396dd-c141-432b-9e69-50f597061e471033.mspx?mfr=true You will need a licensed copy of Exchange Server 2007, and once again depending on your needs you have to choose Standard or Enterprise versions. The comparison chart is here: http://www.microsoft.com/exchange/evaluation/editions.mspx A great place to really start looking at E2007 info in general is the TechNet documentation site. You may want to look at the FAQ there: http://technet.microsoft.com/en-us/library/bb123811.aspx Now regarding CALs.... You won't need Windows CALs specifically for users to access Exchange. If you are running a Windows AD network, you should already have your CALs in place for that. Whether you do or not is another story, but you don't need to buy Windows CALs for the users to hit your Exchange server. That is where the Exchange CALs come in. As you said, every user OR device will need an ExchangeCAL. The link above about server licenses covers CALs as well. To really help you with licensing, you may want to work with a reseller such as CDW.com or ASAP.com to get more in-depth assistance. Hope this helps. Lee