Installation instructions

GFI MailSecurity for Exchange/SMTP Configuring Attachment Checking  65
 Block all except this list - Select this option to block attachment
types that are not included in the list.
NOTE 1: To add an attachment type to the list, input the required full
file name or file extension in the box next to the Add button. When
ready, click Add. You can use asterisk (*) wildcards to replace
characters or strings in the attachment type/extension. For example,
specifying *orders*.mdb blocks all mdb files which contain the string
'orders' in the file name. Specifying *.jpg will block all jpg files.
NOTE 2: To remove an entry from the list, select it and click Remove
Selected.
5. Additionally, you can specify a file size in kilobytes as a threshold.
This has the effect of blocking all attachments with a file size bigger
than the one you specify irrespective of whether it matches an entry in
the list. To enable this option, select the Block all files greater than
the following size in Kb check box and specify the maximum file size
(in KB) allowed without blocking.
Screenshot 56 - Attachment Checking: Actions Tab
6. After you have specified what the attachment rule should check for,
you must specify what this rule should do whenever it finds the
specified attachment(s). Click the Actions tab to open the rule actions
configuration page.
7. Select the Block attachment and perform this action check box if
you want to quarantine, delete or move the blocked emails to a
particular folder. Additionally, select one of the following options:
 Quarantine email: Select this option to quarantine the email
containing the attachment for review by an administrator. For more
information, refer to the „Quarantining‟ chapter in this manual.