After migrating distribution list from exchange 2003 to exchange 2010, Owner of the DL can't have permission to manage the DL

After migrating distribution list from exchange 2003 to exchange 2010, Owner of the DL can't have permission to manage the DL

First of all we should make sure that all the DL should be convert to Universal and upgraded to Exchange Server 2010 and then follow the below steps to resolve the issues.

One question I got in response to my article “Group owners cannot manage distribution groups once migrated from Exchange 2003 to 2010” was the steps required to tweak the default role assignment policy so that the owners can modify the groups, but users cannot create or delete distribution groups.
Let me explain the steps required, which have to be done in the Shell. The permissions to create/modify/delete distribution groups are in the default role named “MyDistributionGroups”. Hence, all we need to do is to take away the role entries which gives users right to create and delete a distribution group (New & Remove-DistributionGroup cmdlets). But, we don’t want to mess with the default roles and hence we will create a new role which is a child of “MyDistributionGroups”. I will name it OwnersCanModifyDistributionGroups.
Run the command below in the Shell to create the role.
New-ManagementRole -Name OwnersCanModifyDistributionGroups -Parent MyDistributionGroups
Create a new management role
Now we need to remove the new & remove-distributiongroup cmdlets from the management role. Run the following in the Shell.
Remove-ManagementRoleEntry OwnersCanModifyDistributionGroupsNew-DistributionGroup
Remove right to create a DG
Remove-ManagementRoleEntry OwnersCanmodifyDistributionGroupsRemove-DistributionGroup
Remove right to delete DG
Now that the custom role is ready, we need to add it to the default role assignment policy. This assumes that you don’t have “MyDistributionGroups” role in the policy. If you have, you need to delete it. Easiest is to use the ECP & remove the check box (follow my article mentioned in the beginning) if you are not comfortable with Shell. Run the command below to add the role to the default policy.
New-ManagementRoleAssignment -Role OwnersCanModifyDistributionGroups -Policy "Default Role Assignment Policy"
Add the new role to default policy
That’s it. Users can now modify the distribution groups they own, but can’t create or remove distribution groups
 

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