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Event ID: 57 Source: NavExchange

Source
Level
Description
Scan Engine error in extracting a file from a compressed file. This error occured while scanning the attachment.
Comments
 
See the link to "Symantec Knowledge Base ID: 1998179438773144" for information about this event.
This may occur when large attachements are sent. The scanning engine may timeout thus the failure in scanning the file. Sometimes zipped files are creating this problem as depending on the compression rate, they may expand to a size that it hard to handle for the antivirus. This type of problem is common between most of the antivirus packages.

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