E-mail messages that are sent to certain domains are retried until they expire in an Exchange Server 2003 organization or in an Exchange 2000 Server organization (912341)

CAUSE

This problem may occur if the target server generates a multiline response to the DATA command that is issued by the Microsoft Exchange server. The Simple Mail Transfer Protocol (SMTP) service on the Microsoft Windows Server 2003 server on which Microsoft Exchange is installed does not handle multiline responses. This problem is more likely to occur when there is a delay introduced between the first line and the last line of the multiline response that is made to the DATA command.

The following is a sample of a multiline response:

354-Line 1
354 Send message

Note The "-" symbol is used instead of a space in multiline messages.

RESOLUTION

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft Windows Server 2003 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Hotfix installation information

You must install the hotfix on the Windows Server 2003 computer that is running Microsoft Exchange.

Prerequisites

You must install Microsoft Windows Server 2003 Service Pack 1 (SP1) before you install the hotfix.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:

889100 How to obtain the latest service pack for Windows Server 2003

Restart requirement

You do not have to restart the computer after you apply the hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.x64-based versions of Windows Server 2003

File name	File version	File size	Date	Time	Platform
Smtpsvc.dll	6.0.3790.2668	668,672	24-Mar-2006	14:12	x64

Windows Server 2003, Enterprise Edition for Itanium-based Systems

File name	File version	File size	Date	Time	Platform
Smtpsvc.dll	6.0.3790.2668	1,265,152	24-Mar-2006	14:12	IA-64

Windows Server 2003

File name	File version	File size	Date	Time	Platform
Smtpsvc.dll	6.0.3790.2668	483,328	25-Mar-2006	03:19	x86

MORE INFORMATION

The problem that is mentioned in the "Symptoms" section can also occur when you are using SMTP in Windows Server 2003 without Exchange installed.

For more information about Microsoft software updates, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

For more information about the naming schema for Exchange Server software updates, click the following article number to view the article in the Microsoft Knowledge Base:

817903 New naming schema for Exchange Server software update packages