I need to know why I cannot move a mailbox on exchange 2003 to Exchange 2010 from the 03 ESM. I can see the 2003 storage groups and stores. I can't see the 2010 storage groups or stores! Why? Is it possible to change a setting in the 03 ESM so I can move mailboxes to the 2010 server or do I need to do everything from the 2010 EMC? I seems I can do everything from the 2010 EMC, do I have to? Thanks

I moved a mailbox from Exchange 2003 to the 2010 server by using the 2010 EMC, it was successful. The Outlook 2003 client cannot find the Exch2010 server though checking the name worked. What could be causing this? Is it possible to move the mailbox back using 2003 Exchange tasks or how can I get it back?

The usual rule is to use the highest version available for work, so if you are moving to or from Exchange 2010, then you would use Exchange 2010 to do that. How long have you waited before trying to use Outlook 2003? Which version of Exchange 2010 are you using RTM or SP1? Are you aware of the encryption requirement for Outlook 2003 and Exchange 2010? http://support.microsoft.com/kb/2006508 Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

that is becouse in exchange 2010 mailboxdatabases are not tied to SG's. they are organizational objects now and exchange system manager does not work that way. having said that. you can move mailboxes either using CMdlets or GUI. i would you have to get used to newer ways of doing things with exchange 2010 EMCDhruv

Simon, The usual rule is to use the highest version available for work... This wouldn't explain why I cannot see the 2010 mail stores in the 03 ESM, what's your take? In the 03 AD Users and Computers I can move it back to the 03 mail stores, though it didn't seem to move back. This appears to be a one way direction in AD Users and tools. I am not using the 08 Users and Tools yet. So let me ask this after the initial move to the 2010 mail store and Outlook resolved the name why does it show off line, yet it was available in 2010 OWA?

As the database architecture has changed with Exchange 2010 compared to Exchange 2003, the fact that things don't work as you expect shouldn't be a surprise. Once a mailbox is on Exchange 2010 then all mailbox management tasks should be done through EMC, if you use ADUC to change Exchange attributes then you will damage the AD entries for that mailbox. Even ADUC on Windows 2008 wouldn't help, because Exchange user management is done exclusively thought EMC or the Shell. With Outlook 2003 you need to be aware of the KB article that I have pointed to above. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

I am not surprised, I only wish for clarification and I don't seem to be getting this, can you clarify? Until we are ready to transition everyone we will be continuing to manage all accounts from the 03 ADUC. First I must ensure functionality, testing and planning with mailbox recovery prepared in the event some of the user mailboxes fail the conversion. We can't move forward until I can run Outlook 03 pointed to a users 2010 mailbox. Why can't see the 2010 mail stores in the 03 ESM, what's your take? In the 03 AD Users and Computers I can move it back to the 03 mail stores, though it didn't seem to move back. This appears to be a one way direction in AD Users and tools. The email account being tested has been moved to the 2010 server, is it possible to move it back to the 03 server, YES or NO? The Email Account being tested works in the 2010 OWA, I cannot get it working in Outlook 2003, though it resolves the server name and the account name what is causing this? Thanks Thanks

Yes you can move mailboxes back to the source forest. Note that when you move it back to the source forest, it can take up to 2hrs for the mailbox to work unless you restart the IS store service. Exchange 2010 moving mailboxes back to source forest http://msexchangetips.blogspot.com/2010/12/exchange-2010-moving-mailboxes-back-to.htmlJames Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

OK, this is good, a bit long but it could help! What about getting Outlook 03 working with the 2010 server?

Not sure about your Outlook 2003 issue, did you eliminate the KB article that sembee posted? Outlook connection issues with Exchange 2010 mailboxes because of the RPC encryption requirement http://support.microsoft.com/kb/2006508James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

Not sure about your Outlook 2003 issue, did you eliminate the KB article that sembee posted? Outlook connection issues with Exchange 2010 mailboxes because of the RPC encryption requirement http://support.microsoft.com/kb/2006508 James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com I revisted that and enabled encryption on the Outlook client. NICE! We are moving forward!

To respond to your question about "why" you can't use the old tools against newer versions, the answer is that it's not supported. If you are moving mailboxes to Exchange 2010, you should stop managing those mailboxes with the Exchange 2003 snapins for Active Directory Users and Computers. This applies even for your initial test mailboxes. http://msexchangeteam.com/archive/2010/01/08/453722.aspx gives a nice chart of what you can and can't do with different versions of the tools. Also describes which tools can move mailboxes to/from which versions of Exchange.

At one time I was using the 03 ESM and I recall seeing the 2010 mail stores, in fact I remember creating a mailbox there in testing and moved it off there and back to the 03 server. When a jounior tech started adding new users and configing email he started to specify the 201 server's store without knowing what he was doing and I had to stop it. After installing 2010 SP1 and the config to get to this point I cannot see the 2010 mailstore as a choice as I had before this does not seem right when I had seen them from the 03 ESM before! Also I now can rout email internally, but it's not going outbound through the 03 box. I get this error. Pending 2/15/2011 11:20 AM exch2010.xxx.xxxxx The message is pending in the queue 'EXCH2010\Unreachable'. The last error was 'A matching connector cannot be found to route the external recipient'. So who can get me going on this one? Thanks

If the 2010 server is not routing external mail through the 03 server look at the Send connector. There wasn't one listed and I created one with the FQDN of the 03 server. the 2010 server couldn't route to it and this error was in all the stuck mail in the queue. Pending 2/15/2011 11:20 AM exch2010.xxx.xxxxx The message is pending in the queue 'EXCH2010\Unreachable'. The last error was 'A matching connector cannot be found to route the external recipient'. I went back to the 2010 server and edited the hub transport send connector and removed the FQDN for the 03 server and I put * in for the SMTP address space and checked the box for all sub-domains. Leaving just the Asterisk did the trick! Mail is now routing outbound!

Hi, “What about getting Outlook 03 working with the 2010 server?” For RPC issue , you also need to start the service “Microsoft Exchange RPC Client Access” on all CAS. And I suggest you doing following setups. 1.Recreate outlook profile for the test user. 2. Test outlook connectivity. http://technet.microsoft.com/en-us/library/dd638082.aspx Here are some information about update from Exchange 2003 to Exchange 2010 you may need. http://technet.microsoft.com/en-au/library/ff805040.aspx

Hi, “What about getting Outlook 03 working with the 2010 server?” For RPC issue , you also need to start the service “Microsoft Exchange RPC Client Access” on all CAS. And I suggest you doing following setups. 1.Recreate outlook profile for the test user. 2. Test outlook connectivity. http://technet.microsoft.com/en-us/library/dd638082.aspx Here are some information about update from Exchange 2003 to Exchange 2010 you may need. http://technet.microsoft.com/en-au/library/ff805040.aspx Outlook is working, figured that out 2 days prior to this message. It needed to be secured in the advanced setup. What I really need is for someone to explain why I cannot see the 2010 mailstores from the 03 ESM, they are not visible and do not show up in the drop down menu. Or why I cannot setup a new user in the 03 ADUC and specify the 2010 server and the mailstore. They do not show up in 03 ADUC and can only add a new user and create the new mailbox on the 03 Exchange from ADUC. Forget I should do this or should do that. I can still create and manage users in the 03 ADUC and will until we are ready to use the 08 admin tools. No one has addressed this question, why?

So what is this then... from above "As the database architecture has changed with Exchange 2010 compared to Exchange 2003, the fact that things don't work as you expect shouldn't be a surprise. Once a mailbox is on Exchange 2010 then all mailbox management tasks should be done through EMC, if you use ADUC to change Exchange attributes then you will damage the AD entries for that mailbox." The bottom line is that all Exchange 2010 tasks should be done with Exchange 2010 tools. You can use ADUC to create users, but that must be all it does, not mail eanble them. Or you can create users through EMC, and then modify attributes that are not Exchange related in ADUC. The management model has changed. Natively ADUC has NOTHING to do with Exchange 2010 mailbox management. The tools themselves haven't changed. ADUC is still ADUC whether it is on 2003 or 2008. All that has changed is the management has been split. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

So what is this then... from above "As the database architecture has changed with Exchange 2010 compared to Exchange 2003, the fact that things don't work as you expect shouldn't be a surprise. Once a mailbox is on Exchange 2010 then all mailbox management tasks should be done through EMC, if you use ADUC to change Exchange attributes then you will damage the AD entries for that mailbox." The bottom line is that all Exchange 2010 tasks should be done with Exchange 2010 tools. You can use ADUC to create users, but that must be all it does, not mail enable them. Or you can create users through EMC, and then modify attributes that are not Exchange related in ADUC. The management model has changed. Natively ADUC has NOTHING to do with Exchange 2010 mailbox management. The tools themselves haven't changed. ADUC is still ADUC whether it is on 2003 or 2008. All that has changed is the management has been split. Simon. Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me. Simon, you said this.. "what is this then" you tell me, you stated it. YOU said "all Exchange 2010 tasks should be done with Exchange 2010 tools" The key word here is should. this does not indicated can only be done, should indicates recommendation though there may be other methods available. In my case I am NOT trying to create a NEW 2010 Mail user, perhaps you have misunderstood? I am continuing our documented setup, creation and maintenance of users. The only new addition IS the new 2010 mail server. During the setup of a new user through our current practices we are still using the 03 ADUC which allows the creation of an email address and mailbox on the 03 server. During this process I have the option to specify where I want the mailbox to reside for the new user. Currently all mailboxes reside on 2 stores on the 03 server. I do not care about creating them with new mailbox functionality which would happen if they were created on the 2010 server or converted. ALL I care about is where the new mailbox may go, nothing more. We can convert them later. What I care about is WHY the option to specify the mailbox location from the 03 ADUC is not showing the option to create it on the 2010 server but it does show the option for the 03 mail server. When I choose the 2010 Administrative group and tab down the mailstore is empty, though there are 2 stores mounted! Perhaps there is an AD issue not showing the correct mail stores? It only seems reasonable that I should be able to create the new user in the 03 ADUC and specify the location on the new store and convert them later once we go native 08.

The reason I said should is that I have seen people who are so welded to the Exchange 2003 way of doing things that they create the accounts on Exchange 2003, then simply use move mailbox to move it to Exchange 2010. If you are creating it natively on Exchange 2010 then you need to use the Exchange 2010 management tools. Therefore your documented new user creation process needs to be updated. However this shouldn't come as a surprise. Exchange isn't the first and would not be the last product to work in different way between revisions. Exchange 2003 management tools cannot see the Exchange 2010 stores because the architecture has changed. There are no storage groups, there are no separate database files. There is nothing wrong with your AD. I am not really sure why you aren't getting this. It has changed. You might not like it, but that is the way it is. If you are at the learning process then this is one of those things that you need to learn. If you had brought a consultant in to setup the server he/she would have told you all of this. As you didn't, you have to learn on the fly. You might find it useful to read some of the Technet and MS Exchange team blogs, particularly from the time of Exchange 2010 release at the end of 2009. There they have gone in to some depth the changes to the product from the previous versions. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

If you had brought a consultant in to setup the server he/she would have told you all of this. As you didn't, you have to learn on the fly. Simon, many times consultants are not an option. Where I am we do not have the resources to hire them unless systems are down. I have upgraded, implemented and maintained systems on multiple platforms, this will get done. I have worked on Exchange since 5.0. I may have beaten 1 question to death as no one was responding to it directly. Though you have sufficiently addressed it I still have a slight unsuredness about it. I recall after the first install of 2010 that I could see the mailstore on there! I had to request a junior tech only create new users email on the 03 box and not on the 2010 box, its stores HAD been an option, they no longer show! I have the necessary resources to draw from and in most cases there are others who will share info to assist. I have read and I am about to reread the 2010 Transition guide again and have additional literature at my fingertips. Everyone here has already been prepared to change processes, so no big deal, we just are not changing yet. I will likely be asking for more info as I go forward. Thanks for your time!