Hello Exchanger,

I have navigate the web and Microsoft web site as well but I did not find a real Comparison between EX03 and EX2010.
could you please give me a link or main differences (Advantages and disadvantages) between both of them. And it's necessary to migrate to Exchange 2010 if Exchange 2003 work properly?
I need to decide that, because in our company we are planning to Migration.
I appreciate your Help in Advanced
Regards

Need to support users over the internet? click here try our remote control online beta

hi,
the following links should help you

http://en.wikipedia.org/wiki/Microsoft_Exchange_Server

1. licensing options

http://www.microsoft.com/exchange/2010/en/us/licensing.aspx#ExCalCom

2.new features

http://www.infoworld.com/d/applications/first-look-exchange-2010-beta-shines-485


http://technet.microsoft.com/en-us/library/bb124008.aspx


http://searchexchange.techtarget.com/generic/0,295582,sid43_gci1372236_mem1,00.html


http://www.simple-talk.com/sysadmin/exchange/upgrade-exchange-2003-to-exchange-2010/

and when u do decide the transition path could include

http://blogs.dirteam.com/blogs/davestork/archive/2009/08/23/the-road-to-exchange-2010-migration-paths.aspx


http://serverfault.com/questions/91090/moving-from-exchange-2003-to-exchange-2010


There is an amazing pack of free network admin tools. click here to download it

Hello Maher.salem,
please go through these article it will help you:--
Microsoft Exchange Server 2010 - Comprehensive Feature list

http://blog.taragana.com/index.php/archive/microsoft-exchange-server-2010-comprehensive-feature-list/

New Transport Functionality

http://technet.microsoft.com/en-us/library/ee633463.aspxMicroSoft
Exchange Admin. & Connector EXCHANGE2010, MCSE, MCTS, MCSA MESSAGING, CCNA & GNIIT

There is an amazing pack of free network admin tools. click here to download it

I'm going through the same process, I've spent alot of time searching for comparisions between ex03 and ex2010 but can't find anything usefull,
I've already found most of the links listed above but they either describe the tranition between the two versions or compare ex2010s new features to ex07.
Does anyone know of a comparitive feature list between 03 and 2010?

There is an amazing pack of free network admin tools. click here to download it

Per my research, there’s no officially published comparison table between exchange 2010 and the legacy versions

But you can use the feature introductions about different versions to sum up the list
What Is New in Exchange Server 2003
What Is New in Exchange Server 2010James Luo
TechNet Subscriber Support (
http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx
)

If you have any feedback on our support, please contact tngfb@microsoft.com

Need to support users over the internet? click here try our remote control online beta