Microsoft KB Archive/271591

= XFOR: Internet Mail Service Does Not Deliver Message After You Install Virus Scan Software =

Article ID: 271591

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Service Pack 3

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This article was previously published under Q271591





SYMPTOMS
When third-party antivirus programs that use the Exchange Antivirus API are running on a server with the Internet Mail Service, messages with large attachments or compression percentage are directed to the Internet Mail Service virtual Bad folder. This behavior most frequently occurs when multiple Internet Mail Service servers exist within the same Exchange Server site.



CAUSE
The ecVirusScanInProgress return code is being checked only once. If Exchange Server gets the return code again when the information store retries to open the same attachment, the return code is mapped to Mapi_call_failed, which causes the Internet Mail Service to move the mail to the Bad folder.



RESOLUTION
To resolve this problem, obtain the latest service pack for Exchange Server 5.5. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

191914 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack

The following files are available for download from the Microsoft Download Center:

x86: Download Q248838engi.exe now

Alpha: Download Q248838enga.exe now

For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to Obtain Microsoft Support Files from Online Services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file.



STATUS
Microsoft has confirmed that this is a problem in Microsoft Exchange Server, 5.5 Service Pack 3 (SP3). This problem was first corrected in Exchange Server 5.5 Service Pack 4.

Additional query words: VAPI

Keywords: kbhotfixserver kbqfe kbbug kbexchange550presp4fix kbexchange550sp4fix kbfix kbgraphxlinkcritical kbqfe KB271591

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