Event ID - 348

Event Id348
DescriptionA message could not be virus scanned - this operation will be retried later. Internet Message ID <proxy address>, Error Code <error code>.
Event InformationCAUSE:
This event indicates that a message could not be scanned for viruses. This can occur if the following conditions are true:

1. An antivirus program that uses the Virus Scanning Application Program Interface (VSAPI) is running on the Exchange server.
2. The VSAPI-based antivirus program is configured to use transport scanning.
3. The message that could not be scanned is digitally signed.

To resolve this error, try one or both of the following:

If you are running VSAPI-based virus scanning software, contact the manufacturer to see if any updates are available. For information about using virus scanning software with Exchange Server 2003, see Microsoft Knowledge Base article 823166, Overview of Exchange Server 2003 and antivirus software.
Reference LinksMicrosoft product: Exchange Version: 6.5.7638.0 Event Source: MSExchangeActiveSyncNotify Event ID: 348

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