IronPort - Configuration Guide - AsyncOS 7.6.1

Chapter 10 Outbreak Filters
Multiple Attachments and Bypassed Filetypes
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Bypassed file types are only excluded if a message’s only attachment is of that type, or in the case of
multiple attachments, if the other attachments do not yet have existing rules. Otherwise the message is
scanned.
Message and Content Filters and the Email Pipeline
Message and content filters are applied to messages prior to scanning by Outbreak Filters. Filters can
cause messages to skip or bypass the Outbreak Filters scanning.
Cisco IronPort AsyncOS 7.6 for Email Configuration Guide
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