How to configure file scanning limits in Symantec Mail Security for Microsoft Exchange (SMSMSE)?
SMSMSE imposes various limits on file extraction. These limits protect against denial-of-service attacks that are associated with overly large or complex container files that take a long time to decompose. These limits also enhance scanning performance. SMSMSE contains a decomposer that extracts the contained or imbedded files so that the individual files can be scanned for risks. The decomposer continues to extract container files until it reaches the base file.
WARNING: When a container file reaches a set limit, the scanning process stops, the violation is logged, and the file is handled according to Unscannable File Rule.
To configure file scanning limits: