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IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/256986/EN-US/ )Description of the Microsoft Windows Registry
To troubleshoot Internet Mail connections it is useful to log certain aspects of the connection. There is no option in Outlook to enable logging for Internet, SMTP, and POP sessions. You can enable logging by editing the Windows Registry.
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
How To Enable Logging of Internet Mail SessionsYou can enable logging of Internet mail sessions by adding a key to the Windows Registry:
For additional information about interpreting the SMTP and POP3 logs, please click the article numbers below to view the articles in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/155455/EN-US/ )How to Enable and Interpret the Smtp.log File
(http://support.microsoft.com/kb/155515/EN-US/ )How to Enable and Interpret the Pop3.log File