Hi There, I need to move a mailbox database from one companies mail server to another companies mail server. The two companies are on different domains. I thought I could simply dismount the DB, copy it, then import/attach it on the new server then attach the mailboxes to the new accounts but there isn't this option. Does anyone have a best practice for this? I have a copy of the ecb file, is there a way for me to perform a recovery of the time into the new server. Any help is much appreciated!

Hi You need to move the users between organisations using Exchange (version dependant) or a 3rd party tool. If this is not possible then a 3rd party database recovery tool is your only option. Cheers, Steve

Agreed, if you have the bandwidth and the ability to setup the needed security you would need to do a cross forest migration and here are a few articles/guides that might be of use http://blogs.technet.com/b/meamcs/archive/2011/10/25/exchange-2010-cross-forest-migration-step-by-step-guide-part-ii.aspx http://blogs.technet.com/b/exchange/archive/2010/08/10/3410619.aspx If you are interested in 3rd party applications you should check out Lucid8's DigiScope http://www.lucid8.com/product/digiscope.asp which can open any offline Exchange database versions 5.5, 2000, 2003, 2007 and 2010 so that you can Search, Browse and Export Mailboxes, Folders and Individual Items to PST or if desired you can Recover/Import the mailboxes direct from the Offline EDB into any production Exchange server even cross version i.e. 2003 --> 2007 or 2010 etc. Troy Werelius www.Lucid8.com Search, Recover, & Extract Mailboxes, Folders, & Email Items from Offline EDB's and Live Exchange Servers with Lucid8's DigiScope

Remote moves are able to move mailboxes between forests - that is their primary purpose and something I do on a daily basis. Read this article for more information: http://technet.microsoft.com/en-us/library/dd298174.aspx#Rem I use normally use Quest tools (Recovery Manager for Exchange) but they are not the cheapest.

The New Remote Move Request will only work between domains in the same forest, these two domains are not in the same forest. Would it be simplest for me to just add their DC to our domain then use the Remote Move Request? Any recommendations re 3rd party applications?

Agreed, if you have the bandwidth and the ability to setup the needed security you would need to do a cross forest migration and here are a few articles/guides that might be of use http://blogs.technet.com/b/meamcs/archive/2011/10/25/exchange-2010-cross-forest-migration-step-by-step-guide-part-ii.aspx http://blogs.technet.com/b/exchange/archive/2010/08/10/3410619.aspx If you are interested in 3rd party applications you should check out Lucid8's DigiScope http://www.lucid8.com/product/digiscope.asp which can open any offline Exchange database versions 5.5, 2000, 2003, 2007 and 2010 so that you can Search, Browse and Export Mailboxes, Folders and Individual Items to PST or if desired you can Recover/Import the mailboxes direct from the Offline EDB into any production Exchange server even cross version i.e. 2003 --> 2007 or 2010 etc. Troy Werelius www.Lucid8.com Search, Recover, & Extract Mailboxes, Folders, & Email Items from Offline EDB's and Live Exchange Servers with Lucid8's DigiScope

Remote moves are able to move mailboxes between forests - that is their primary purpose and something I do on a daily basis. Read this article for more information: http://technet.microsoft.com/en-us/library/dd298174.aspx#Rem I use normally use Quest tools (Recovery Manager for Exchange) but they are not the cheapest.

Hi Seb Have you try the above links? CheersZi Feng TechNet Community Support