Microsoft Exchange Server 2013: Mailbox and High Availability

Email address policies

Email address policies define the format of email addresses Exchange creates for mail-enabled objects such as mailboxes and groups. Exchange 2013 applies email address policies in a consistent and immediate manner because the Exchange Management Shell (EMS) cmdlets that create or update mail-enabled recipients call a common set of business logic. The only way to stop Exchange from applying an email address policy to an object is to exclude it explicitly from these updates. For example:

Set-Mailbox –Identity 'David Pelton' –EmailAddressPolicyEnabled $False

Typically, the effect of an email address policy is felt when a new mail-enabled object is created or updated or after an administrator changes a policy that creates a new ...