Among other things this rebranding exercise also includes changing their primary email addresses.
For several versions of Exchange Server now we’ve had the capability to manage email addresses for recipients by using policies.
Keep in mind that this will add another task to the process of managing recipients.
When users are created or moved to or from the OU, you have to make sure that the particular attribute you decide to use is populated or removed.
Use the Update-Email Address Policy cmdlet to apply new or updated email address policies to the affected recipients in an on-premises Exchange organization.
For information about the parameter sets in the Syntax section below, see Exchange cmdlet syntax.
Although this topic lists all parameters for the cmdlet, you may not have access to some parameters if they're not included in the permissions assigned to you.
The Update-Email Address Policy cmdlet queries for all recipients that match the specified email address policy and saves the objects to Active Directory.
They can be used to apply the policy irrespective of the recipient's location in the Active Directory hierarchy of containers and OUs.
If you need to apply the policy to all OU recipients, you can either use the common attributes or one of the extension attributes -- perhaps by populating one of them with the name or the distinguished Name of the OU, or some other string.
The default recipient policy creates two email addresses: a default SMTP address and an X.400 address.
Deleting email address rules in the default recipient policy: Rules in the default recipient policy can be modified to accomplish tasks like generating email addresses for an SMTP address space for your public/registered DNS domain. NOTE:- For Windows 7 / Vista / 2008 / 2008 R2 machines with User Account Control enabled, Select 'Run as Administrator' while opening Command Prompt 5. Depending on the amount of data to be migrated, the installation procedure may take a few minutes. NOTE: Please Follow the steps 4,5,6 & 7 again to apply more than one Service Pack. Click Close and then Exit to quit Update Manager tool.