Cross forest Move Mailbox in Bulk – Exchange2010 to Exchange 2010

As a Initial Process Please Follow

Cross Forest Migration Guide – Exchange 2010 to Exchange 2010

Lets see how to Move Mailboxes in Bulk in Cross forest scenario

Taking the Dump is always the same way , Whatever the version your migrating to

I have collected the my users in the same OU so that I can take the Dump easily

my OU (Organizational Unit) Name is “SourceUsers”

I need the Distinguish name of my OU (Organizational Unit)

View->Advance Features

Right Click – Properties of your OU (Organizational Unit) – Attribute Editor

Get the Value of “Distinguished Name”

In my case its “OU=SourceUsers,DC=CareExchange,DC=in”

Open Command prompt

Run

csvde -d “OU=SourceUsers,DC=CareExchange,DC=in” -f c:\SourceUserDump.csv -r (objectclass=user) –l mail

Now it Collected the 5 Mailboxes available

Now your Notepad will look like this

Remove the first Column – Use Excel or Use Notepad – Its up to you –

Note – First Line contains the title – Identity

Now it should look like below

To Verify Run Import-Csv “SourceUserdump.csv”

Now you can Import the CSV Pipe it to the Script as Below

Import-Csv “SourceUserdump.csv” | .\Prepare-MoveRequest.Ps1 -RemoteForestDomainController “FQDN of Source DC” -RemoteForestCredential $RemoteCredentials -LocalForestDomainController “FQDN of Target Forest DC” -LocalForestCredential $LocalCredentials -TargetMailUserOU “Distinguished name of OU in TargetForest” –UseLocalObject

If your doing for many objects , Its going to run fast and Errors won’t get saved

I would recommend to run Start-Transcript C:\MoveDump.txt

So that you have the right data in hand

To stop the Transcript – Stop-Transcript

Now you got your disable accounts Created

Now move the Users using ADMT migrating with SIDs

How to Migrate Users Across forest (Cross Forest) using ADMT 3.2 with sid and Passwords

Now accounts are activated with SID

Now Moving the mailbox using Remote Move

Import-Csv “SourceUserdump.csv” |New-MoveRequest –Remote –Remotehostname ‘sourceExchange.CareExchange.in’ -RemoteCredential $RemoteCredentials –TargetDeliverydomain ‘targetexchange.in

Now you won’t be able to logon on the new forest directly as you required to change password as first logon

To avoid that situation

see

How to Disable “User must change password at next logon” after cross forest move using ADMT 3.2

Great !!

you Learnt how to Move in Bulk in Cross forest Scenario

Regards

Satheshwaran Manoharan

25 COMMENTS

Maryann Murphy September 21, 2012 At 5:38 am

Much informative and useful article… I like it personally…

- Satheshwaran Manoharan September 21, 2012 At 3:16 pm
  
  Thanks Maryann
  
John Stratham January 9, 2013 At 12:24 pm

Will this work the same for source Exch2k7 – Target Exch2k10 ?

- Satheshwaran Manoharan January 9, 2013 At 1:06 pm
  
  Yes, The method is the Same.
  
  As the Source (Exchange 2007) Doesn’t recognize “Remote” move – you got to use Remote Legacy
  
  Import-Csv “SourceUserdump.csv” |New-MoveRequest –Remotelegacy –Remotehostname ‘sourceExchange.CareExchange.in’ -RemoteCredential $RemoteCredentials –TargetDeliverydomain ‘targetexchange.in
  
  Other than that. All the other steps remains the same
  
Chris April 5, 2013 At 10:52 pm

This article and

http://20.74.169.163/cross-forest-migration-guide-exchange-2010-to-exchange-2010/

that article have saved me a ton of researching. Thank you very much!

- Satheshwaran Manoharan April 9, 2013 At 7:56 am
  
  Your Welcome Chris !
  
Fabian Hernandez August 13, 2013 At 8:04 pm

Awesome Write up yet again!

When running
Import-Csv “SourceUserdump.csv” | .\Prepare-MoveRequest.Ps1 -RemoteForestDomainController “FQDN of Source DC” -RemoteForestCredential $RemoteCredentials -LocalForestDomainController “FQDN of Target Forest DC” -LocalForestCredential $LocalCredentials -TargetMailUserOU “Distinguished name of OU in TargetForest” –UseLocalObject

I get Prepare-MoveRequest.ps1 cannot bind argument to parameter ‘Identity’ because it is an empty string.

What am i doing wrong?

- Satheshwaran Manoharan August 14, 2013 At 4:17 pm
  
  Thank you fabian,
  
  Right Click Shell – Run As administrator.
  
  ,,
  And not Copy paste.
  
  I have experienced this issue before
  
  - Fabian Hernandez August 14, 2013 At 4:35 pm
    
    Thanks a lot Sath, Really appreciate all your work!
    
    - Satheshwaran Manoharan August 14, 2013 At 5:38 pm
      
      Most Welcome !
      
- Krismayanto August 26, 2013 At 6:21 am
  
  Hi Fabian, remove the empty string in the last of line. The script try to read the empty string and return with can not bind because it is an empty string.
  
krupananda August 29, 2013 At 6:56 pm

thanks Satheshwaran…

- Satheshwaran Manoharan September 1, 2013 At 9:49 am
  
  Always Welcome Krupananda
  
Jude S September 18, 2013 At 2:35 pm

Thank you Sath, this is a great post, truly appreciate it.

- Satheshwaran Manoharan September 18, 2013 At 2:39 pm
  
  You are most welcome Jude.
  
Sjoerd van den Nieuwenhof February 27, 2014 At 12:19 pm

Hi,

I receive the message: “invalid parameter: input file name required” when i like te export the users.
Can you let me know what i’m doing wrong?

Regards,

Sjoerd

Anil June 2, 2014 At 11:07 am

Thanks for your help……appreciate your work

Razor July 10, 2014 At 2:15 pm

Hi Satheshwaran Manoharan,

It is possible to migrate from Exchange 2010 with Windows Server 2008 R2 to Exchange 2010 with Windows Server 2012R2 ?
Hope you reply

- Satheshwaran Manoharan July 10, 2014 At 5:03 pm
  
  Exchange 2010 doesn’t work on windows server 2012 or 2012 r2
  —
  Not supported
  
bing March 22, 2016 At 1:58 pm

I know this web page gives quality based posts and additional data, is there any other website
which provides these kinds of stuff in quality?

Pape June 30, 2016 At 7:00 am

Hello,

Thanks for this interesting post. I have an issue when migrating bulk users. i get the error “target user already has a primary mailbox”. Any idea?

Pape

PNS July 13, 2016 At 6:14 am

Hi

in a cross forest migration scenario we are migrating from ex 2007 to ex 2013. our concern is customer wants to change logon name in target forest ex. source logon name firstname.lastname Target logon name would be his employee ID. we do not have any issue with AD account migration we are confuse what approach we should user for mailbox migration.
how to map mailboxes to different AD ID in target environment?

- Satheshwaran Manoharan August 16, 2016 At 8:44 am
  
  Migrate first. then change .
  
PNS July 13, 2016 At 6:14 am

Hi

in a cross forest migration scenario we are migrating from ex 2007 to ex 2013. our concern is customer wants to change logon name in target forest ex. source logon name firstname.lastname Target logon name would be his employee ID. we do not have any issue with AD account migration we are confuse what approach we should user for mailbox migration.
how to map mailboxes to different AD ID in target environment?

variable July 3, 2017 At 1:27 pm

Hi,
very informative post, i have a situation where i need to migrate exchange users cross forest to a server that already has user accounts. Current set-up has exchange and ad server on seperate forest. Does someone know how i can migrate the mailbox as mentioned above, disable/remove the migrated ad account and bind it to existing AD account? I know how to do it manualy but perhaps someone has a handy script for doing so?