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PureMessage for Microsoft Exchange can block selected attachments by filetype, name and multiple extensions.
This article provides information blocking threats by filetype.
Applies to the following Sophos product(s) and version(s) PureMessage for Microsoft Exchange
The main filetypes are
For archives, self-extracting archives and graphics, you can exclude types of files individually.
You can also block the attachment types most likely to contain a virus:
Blocking by attachment name enables you to block individual files and types of files.
An alert can be sent to the administrator to inform them of the blocked attachments.
You can block email attachments by filetype in the mail scanning page:
To block additional filetypes, use wildcards to block by attachment name. For example, to block all ASC files add '*.ASC' to the list.
To block files with multiple extensions (virus writers use double extensions to hide a virus):
See the PureMessage for Microsoft Exchange manual for more information.
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