Cannot Assigne Full Access Permissions To User's Mailbox Since Moving To Exchange 2010

Hello,  I have just recently finished moving all our user mailboxes over to Ex2010 from Ex2007.  User mailboxes retained their Full Access permissions from Ex2007.  Okay, here is the problem.   New mailboxes created on Ex2010 - I cannot assign Full Access permission to some specific security groups we have set up in house.    For example, every user mailbox is modified with Full Access Permission for 3 site security groups (Leadership Group, Admin Assistants Group and System Administrators Group).   Worked fine on Ex2007.  However, on EX2010, these groups do not even appear in the list of users and groups in the
SELECT USER OR GROUP - ENTIRE FOREST.

When I search for the group name, it cannot be found????
Really need to have these permissions set, but no idea what the issue is.  Please advise.  Thanks.
rstuemkeAsked:
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Dilip PatidarConnect With a Mentor Commented:
Hello,

You can also try this:

Add-AdPermission -Identity "User Mailbox login account Name" -User "Universal security group" -AccessRights readproperty, writeproperty _properties "Personal Information"

Get-Mailbox -Identity "User Mailbox Name" | Add-MailboxPermission -User "Universal security group" -AccessRights fullaccess

This can also try :

Get-Mailbox | Where { $_.Database –eq “” } | Add-AdPermission -User “Domain Admins” -AccessRights extendedright -ExtendedRights “send as

Regard's
Dilip Patel
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Dilip PatidarCommented:
Hello,

You can try below command:

Get-DistributionGroupMember “Test Group” | foreach-Object { Add-MailboxPermission “Usermailbox” –AccessRights FullAccess –user $_.Name}

Regard's
Dilip Patel
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ChrisCommented:
can you try adding them through powershell to see if you get a different error

Add-MailboxPermission -Identity "John Doe" -User yli -Accessright Fullaccess -InheritanceType all
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rstuemkeAuthor Commented:
Update......correction.... 2 of the 3 groups do not show up.... leadership and assistants groups.   Administrators groups does show up.  So perhaps it is a permissions problem.
Other site created security groups do appear.  I checked the security permissions on the groups that appear against those 2 that do not and they appear identical.
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rstuemkeAuthor Commented:
Went back to a user that was moved from EX2007 and these 2 groups are not visible if I try to modify Full Access permissions there either.   Just checked, even though I knew they would be missing.
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ChrisCommented:
are they in the same domain/forest and what kind of groups are they ie. Domain Local , Global, Universal
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rstuemkeAuthor Commented:
Yes, I have a script that will add the permissions to all the users.  It works fine.  I ran it and the permissions are there.  Should have mentioned it  My comment about really needing to get the permissions installed was a bit misleading.  Sorry.

However, part of the procedure when creating a user mailbox is to add them when the user mailbox is created.  It is easier to just do it then, so I would like to actually correct the problem.
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ChrisCommented:
if they are already added it won't let you add them a second time.
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rstuemkeAuthor Commented:
Yes, I know.      They were not added, though when I tried to add them thru the EMC, these 2 groups do not show up.  That is the real problem.  the groups do not appear in the list of users and groups - entire forest.  Let's not confuse that fact that I added the permissions thru a script.  Thanks,
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rstuemkeAuthor Commented:
These missing 2 groups showed up fine when the mailboxes were on the Ex2007 server.  Were never missing from the list.
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ChrisCommented:
ok back to the previous question

what kind of groups are they?
Are the in the same domain/forest
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rstuemkeAuthor Commented:
They are security groups.  All same forest and domain.
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rstuemkeAuthor Commented:
Resorted to just using the command line to add permissions.  Works fine.  Thanks.
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