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Decompressed file count exceeds
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Type a number to configure a restriction
for the number of decompressed files that ScanMail will scan.
When the amount of decompressed files within the compressed file exceeds
this number, then ScanMail only
scans files up to the limit set by this option.
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Size of decompressed files exceeds
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Type a number that represents the size limit
in MB. ScanMail only
scans compressed files that are smaller or equal to this size after
decompression.
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Number of layers of compression
exceeds
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Type a number from 1-20. ScanMail only scans compressed
files that have less than or equal to the specified layers of compression.
For example, if you set the limit to 5 layers of compression, then ScanMail will scan
the first 5 layers of compressed files, but not scan files compressed
to 6 or more layers.
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Size
of decompressed file is "x" times the size of compressed file
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ScanMail only
scans compressed files when the ratio of the size of the decompressed
file compared to the size of the compressed file is less than or
equal to this number.
This function prevents ScanMail from scanning
a compressed file that might cause a Denial-of-Service (DoS) attack.
A Denial-of-Service (DoS) attack happens when a mail server’s resources
are overwhelmed by unnecessary tasks. Preventing ScanMail from scanning
files that decompress into very large files helps prevent this problem from
happening.
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