Microsoft KB Archive/313318

= Cannot Relay Mail Through ISA Server If Authentication Is Required =

Article ID: 313318

Article Last Modified on 6/14/2007

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APPLIES TO


 * Microsoft Internet Security and Acceleration Server 2000 Standard Edition

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This article was previously published under Q313318



SYMPTOMS
Clients that are outside an ISA server cannot relay mail through that ISA server. This problem may occur if external clients try to send mail to other external recipients.



CAUSE
The internal mail server may require client authentication with the AUTH command. This functionality is not supported by the Simple Mail Transfer Protocol (SMTP) application filter in the original release of Microsoft ISA Server.



RESOLUTION
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

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

The global version of this hotfix has the file attributes (or later) 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 tool in Control Panel. Date        Time      Version       Size    File name - 22-Oct-2002 14:25:24  3.0.1200.180  60,176  Fltrsnk1.dll 22-Oct-2002 14:25:28  3.0.1200.180  93,968  Smtpfltr.dll



STATUS
Microsoft has confirmed that this is a problem in Internet Security and Acceleration Server 2000.

Additional query words: ISAS

Keywords: kbhotfixserver kbqfe kbprb KB313318

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