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Security Update, July 6, 2001

This update addresses the "Windows 2000 SMTP Mail Relaying" security vulnerability in the Windows 2000 Simple Mail Transfer Protocol (SMTP) service, and is discussed in Microsoft Security Bulletin MS01-037. Download now to help prevent malicious users from relaying e-mail messages from your computer.

This vulnerability results because of an authentication error in the Windows 2000 SMTP service that installs by default as part of Windows 2000 Server products and optionally on Windows 2000 Professional. Download now to prevent a malicious user from using your computer for mail relaying.

Note This vulnerability applies only to stand-alone computers (a computer that is not a member of a domain) and does not affect computers that are running Exchange 2000 Server.

For more information about this vulnerability, read Microsoft Security Bulletin MS01-037. (This site is in English).

System Requirements
This update applies to:

Windows 2000 with the SMTP service installed.

How to use
Restart your computer to complete the installation.

How to uninstall

1. Click Start, point to Settings, and then click Control Panel.
2. Double-click Add/Remove Programs.
3. Click Windows 2000 Hotfix (Pre-SP3) [See Q302755 for more information], and then click Change/Remove to uninstall.

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