Product manual

GFI MailEssentials 8 Content Filtering | 165
Option Description
Check Internal emails Select this option to scan internal emails.
NOTE
This option is only available when GFI MailEssentials is installed on the Microsoft
®
Exchange server
5. In the Attachment Blocking area, specify the types of attachments to block:
Option Description
Block all Block all email attachments of any type.
Block this list Block a custom list of attachment types. Key in a filename and/or attachment type to block in
the Enter filename with optional wildcards text box and click Add. Repeat this step for all
filenames and/or attachment types to block.
Do not block
attachments smaller
than the following
size:
Select this option to allow attachment types in the list that are smaller than a particular size.
Specify the size (in KB) in the text box provided.
Block all except this
list
Block all attachments except the ones specified in the list. Key in a filename and/or
attachment type to allow in the Enter filename with optional wildcards text box and click
Add. Repeat this step for all filenames and/or attachment types to exclude.
NOTE
When specifying filenames and/or attachment types, you can use asterisk (*) wildcards.
For example, specifying *orders*.mdb refers to all files of type mdb that contain the
string orders in the file name. Specifying *.jpg will block all images of type jpg.
NOTE
To remove an entry from the list, select it and click Remove Selected.
6. You can also block attachments that have a size bigger than a particular size. To enable this
option, from the Options area select Block all attachments greater than the following size in
KB and specify the maximum attachment size (in KB).
NOTE
This feature blocks all attachments with a file size bigger than the one specified
irrespective if the attachment matches an entry in the Attachment blocking list.
Step 2: Configuring the actions to take on detected emails
1. Click the Actions tab to configure what happens when this rule is triggered.