XCLN: Messages Received from Internet Display SMTP Address on the To and Cc Lines

ID: Q242301

The information in this article applies to:
  • Microsoft Outlook Windows 95/98 client, version 9.0
  • Microsoft Outlook Windows NT client, version 9.0
  • Microsoft Outlook Web Access, version 5.5
IMPORTANT: This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore it if a problem occurs. For information about how to do this, view the "Restoring the Registry" Help topic in Regedit.exe or the "Restoring a Registry Key" Help topic in Regedt32.exe.

SYMPTOMS

When a user receives a message from the Internet, the user's SMTP address appears on the To or the Cc line instead of their display name.


CAUSE

By default, if the recipient's mailbox is on the same server as the Internet Mail Service, the To, Cc, or Bcc fields, which are all P2 properties, are not resolved against the global address list.


RESOLUTION

In order to force the resolution of all P2 properties against the global address list, you need to turn on the ResolveP2 registry value.

WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

For information about how to edit the registry, view the "Changing Keys and Values" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe. Note that you should back up the registry before you edit it. If you are running Windows NT, you should also update your Emergency Repair Disk (ERD).

  1. Start Registry Editor (Regedt32.exe).


  2. Locate the ResolveP2 value under the following key in the registry:


    3. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIMC\Parameters
  3. On the Edit menu, click DWORD, type 1, and then click OK.


  4. Quit Registry Editor.


You now need to stop and restart the Internet Mail Service.
  1. Click Start, point to Settings, and then click Control Panel.


  2. Double-click Services.


  3. Locate the Microsoft Exchange Internet Mail Service.


  4. Click the Stop button.


  5. When the Internet Mail Service has stopped, click Start.



MORE INFORMATION

For additional information on the ResolveP2 registry setting, click the article numbers below to view the articles in the Microsoft Knowledge Base:

Q174755 XFOR: ResolveP2 Registry Setting Expanded in Exchange 5.5
Q192583 XADM: IMS/STORE Incorrectly Archives Message If ResolveP2 Is On
Q185153 XFOR: Using Exchange As a Gateway Between UNIX and MS Mail

Additional query words:

Keywords :
Version : WINDOWS:5.5,9.0
Platform : WINDOWS
Issue type : kbprb


Last Reviewed: November 17, 1999
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