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An email address policy does not generate the email addresses of recipients correctly in an Exchange Server 2010 environment

Article ID: 2661294 - View products that this article applies to.

SYMPTOMS

Consider the following scenario:

You create some recipients by using Exchange Management Console or Exchange Management Shell in a Microsoft Exchange Server 2010 environment.
The aliases of the recipients begin with one of the following combinations of lowercase characters followed by a hexadecimal number that has less than 5 digits:
- sa
- sb
- sc
For example, the alias is sa000c1 or sbcc.
You create an email address policy and apply the policy to the recipients.

In this scenario, the email address policy does not generate the email addresses of the recipients correctly. For example, the secondary email address of the recipients is not generated.

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CAUSE

This issue occurs because these aliases match a special pattern. Therefore, they are recognized as randomized proxy names incorrectly.

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RESOLUTION

To resolve this issue, install the following cumulative update:

2661854

(http://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:

322756

(http://support.microsoft.com/kb/322756/ )

How to back up and restore the registry in Windows

After 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.

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

Notes

Install update that is described in Microsoft Knowledge Base (KB) article 2661854
(http://support.microsoft.com/kb/2661854/ )
before you run this Fix it solution.
This wizard may be in English only. However, the automatic fix also works for other language versions of Windows.
If you are not on the computer that has the problem, save the Fix it solution to a flash drive or a CD and then run it on the computer that has the problem.

Then, go to the "Did this fix the problem?" section.

Let me fix it myself

To enable this update, change the following registry key:

Click Start, click Run, type regedit, and then press Enter.
Locate the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ExchangeServer\v14\Admin
Right-click Admin, click New, and then click DWORD Value.
Type IgnoreGeneratedProxy, and then press Enter.
Right-click IgnoreGeneratedProxy, and then click Modify.
In the Value data box, type 1, and then click OK.

Did this fix the problem?

Check whether the problem is fixed. If the problem is fixed, you are finished with this section. If the problem is not fixed, you can contact support
(http://support.microsoft.com/contactus)
.
We would appreciate your feedback. To provide feedback or to report any issues with this solution, please leave a comment on the "Fix it for me
(http://blogs.technet.com/fixit4me/)
" blog or send us an email
(mailto:fixit4me@microsoft.com?Subject=KB)
.

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