Article ID: 2661294 - View products that this article applies to.
Consider the following scenario:
This issue occurs because these aliases match a special pattern. Therefore, they are recognized as randomized proxy names incorrectly.
To resolve this issue, install the following cumulative update:
(https://support.microsoft.com/kb/2661854/ )Description of Update Rollup 2 for Exchange Server 2010 Service Pack 2
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756After you install the cumulative update, to have us enable this update for you, go to the "Fix it for me" section. If you prefer to enable this update yourself, go to the "Let me fix it myself" section.
(https://support.microsoft.com/kb/322756/ )How to back up and restore the registry in Windows
Fix it for me
To enable this update automatically, click the Fix it button or link. Then click Run in the File Download dialog box, and follow the steps in the Fix it wizard.
Fix this problem
Microsoft Fix it 50899
Then, go to the "Did this fix the problem?" section.
Let me fix it myselfTo enable this update, change the following registry key:
Did this fix the problem?
To work around this issue, use uppercase characters in the aliases of the recipients. Or, manually add the email addresses of the recipients.
For more information about email address policies, visit the following Microsoft website:
General information about email address policiesFor more information about how to create email address policies, visit the following Microsoft website:
How to create email address policiesFor more information about how to apply email address policies, visit the following Microsoft website:
How to apply email address policies
Article ID: 2661294 - Last Review: July 4, 2012 - Revision: 2.0