Attachment Filtering

Attachment Filtering allows you to set up rules to filter what types of email attachments to allow and block on the mail server. A rule is composed of:

  • Attachment types to block
  • Actions to take when a matching attachment is found
  • The users to which a rule applies.

To configure attachment rules, navigate to Content Filtering > Attachment Filtering. This page allows you to view, create, enable, disable or delete rules.

Creating an Attachment Filtering rule

To create an Attachment filtering rule follow the steps listed below:

Enabling/disabling rules

To enable or disable attachment filtering rules:

  1. Go to Content Filtering > Attachment Filtering.
  2. From the Attachment Filtering page, select the checkbox of the rule(s) to enable or disable.
  3. Click Enable Selected or Disable Selected accordingly.

Removing attachment rules

Warning

Deleted rules are not recoverable. If in doubt, it is recommended to disable a rule.

  1. Go to Content Filtering > Attachment Filtering.
  2. From Attachment Filtering page, select the rule(s) that you want to remove.
  3. Click Remove Selected.

Modifying an existing rule

  1. Go to Content Filtering > Attachment Filtering.
  2. From Attachment Filtering page, click the name of the rule to modify.
  3. Perform the required changes in the rule properties and click Apply.

Changing the rule priority

Attachment Filtering rules are applied in the same order, from top to bottom as they are listed in the Attachment Filtering page (that is, rule with priority value 1 is checked first). To change the sequence/priority of rules:

  1. Go to Content Filtering > Attachment Filtering.
  2. From the Attachment Filtering page, click the (up) or (down) arrows to respectively increase or decrease the priority of the selected rule.
  3. Repeat step 2 until rules are placed in the desired sequence.