Cisco Cisco Email Security Appliance C170 Mode D'Emploi

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Cisco IronPort AsyncOS 7.5 for Email Advanced Configuration Guide
OL-25137-01
Chapter 6      Using Message Filters to Enforce Email Policies
Drop 
Attachments 
by Type
drop-attachments
-by-type
Drop all attachments on messages that have 
a MIME type, determined by either the given 
MIME type or the file extension. Archive file 
attachments (zip, tar) will be dropped if they 
contain a file that matches. See 
Drop 
Attachments 
by File Type
drop-attachments
-by-filetype
Drop all attachments on messages that match 
the given “fingerprint” of the file. Archive 
file attachments (zip, tar) will be dropped if 
they contain a file that matches. For more 
information, see 
Drop 
Attachments 
by MIME 
Type 
drop-attachments
-by-mimetype
Drop all attachments on messages that have 
a given MIME type. This action does not 
attempt to ascertain the MIME type by file 
extension and so it also does not examine the 
contents of archives. See 
Drop 
Attachments 
by Size 
drop-attachments
-by-size
Drop all attachments on the message that, in 
raw encoded form, are equal to or greater 
than the size (in bytes) given. Note that for 
archive or compressed files, this action does 
not examine the uncompressed size, but 
rather the size of the actual attachment prior 
to any decoding. See 
Table 6-5
Message Filter Actions
Action Syntax 
Description