F-SECURE ANTI-VIRUS FOR MICROSOFT EXCHANGE 7.10 Administrator's Manual page 87

Action on Mails with
Exceeding Nesting
Levels
Quarantine
Problematic
Messages
Trusted Senders and Recipients
You can use trusted senders and recipients lists to exclude some
messages from the mail scanning and processing completely.
Trusted Senders
Trusted Recipients
Centrally Managed Administration
It is not recommended to set the maximum
nesting level to unlimited as this will make the
product more vulnerable to DoS
(Denial-of-Service) attacks.
Specify the action to take on inbound messages
with nesting levels exceeding the upper level
specified in the Max Levels of Nested Messages
setting.
Drop the Whole Message - Messages with
exceeding nesting levels are not delivered to the
recipient.
Pass Through - Nested messages are scanned
up to level specified in the Max Levels of Nested
Messages setting. Exceeding nesting levels are
not scanned, but the message is delivered to the
recipient.
Specify if mails that contain malformed or broken
attachments are quarantined for later analysis or
recovery.
Specify senders who are excluded from the mail
scanning and processing.
Specify recipients who are excluded from the
mail scanning and processing.
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