The basic components of an email address policy are: An email address template contains the address type and the address format.An email address policy can contain multiple email address templates.Microsoft is conducting an online survey to understand your opinion of the Technet Web site.If you choose to participate, the online survey will be presented to you when you leave the Technet Web site. Event Type: Information Event Source: MSExchange AL Event Category: LDAP Operations Event ID: 8012 Date: 3/27/2006 Time: AM User: N/A Computer: EX-01 Description: Search of directory DC-01.at base 'DC=tlaconsulting, DC=ca' returned 3 objects.Event Type: Information Event Source: MSExchange AL Event Category: Address List Synchronization Event ID: 8169 Date: 3/27/2006 Time: AM User: N/A Computer: EX-01 Description: Retrieved all directory changes under: 'DC=tlaconsulting, DC=ca'.The available SMTP domain values are determined by the accepted domains that are configured for your organization.The Exchange Server Recipient Update Service (RUS) is important to the overall health of your messaging environment.
For more information about accepted domains, see Accepted domains in Exchange 2016.
In small organizations, the RUS often stays in the background.
However, if you work with large or complex deployments, you're likely to find yourself trying to cope with multiple recipient policies or wishing you understood why the RUS doesn't do quite what you'd expect it to do.
Whatever your situation, understanding how recipient policies work, whether to force the RUS to perform a rebuild, and which problems you're likely to run into can help you keep things running smoothly.
The RUS searches for Active Directory (AD) updates on a scheduled basis, then takes action to ensure that the objects it finds can receive email.