Configuring Email Filter

This section describes how to configure the email filter function. Based on the conditions of users, schedules, and sending conditions, the administrators can create proper email filter rules. And the system will deal with the matched traffic according to the configurations.

Creating an Email Filter Rule

To create an email filter rule, take the following steps:

1. On the Navigation pane, click Configure > Content > Email Filter to visit the Email Filter page.
2. Click New.
3. In the Email Filter Rule Configuration dialog, type the name of the rule into the Name box.
4. Under Match Conditions, specify the conditions for the rule. The conditions include destination zone, user, and schedule.

   Item	Description
   Dst zone	Specifies the destination zone for the rule.
   User	Specifies the user for the rule. It can be address entry, IP address, IP range, role, user, or user group. The default user is Any, which means all users. Click Choose to configure the user condition. Specify the user type in the Type option. It can be one the the following types: Src address or User. Choose the option button of the wanted type and finish the related settings. Src address: Use the Src address type. The member of it can be address entry, IP, and IP range. If Address entry is selected, from the Address entry drop-down list, select the address entry you want or click New addressbook to create a new address entry in the Address Entry Configuration dialog; if IP is selected, type the IP address and netmask into the IP address box; If IP range is selected, type the IP range in the IP range box. User: Use the User type. The member of it can be role, user, and user group. From the User type drop-down list, select the type you want. If Role is selected, from the Role drop-down list, select the role you want; if User is selected, from the AAA server drop-down list, select the user name you want; if User group is selected, from the AAA server drop-down list, select the AAA server you want, and from the Group drop-down list, select the group you want. Click Add to add the configured users into the system. And the added users will be shown in the list below. To delete a user, select the user from the list, and then click Delete. Click OK to save the settings
   Schedule	Specifies the schedule of the rule. The rule will take effect in the period defined by the schedule. By default, no schedule is specified, and the rule is available all the time. Click Choose to select schedules in the Schedule dialog. Select the check boxes of the wanted schedules in the list or create new schedules by click New. For more information about schedules, see Configuring Schedules.

5. Under Action, specify the control type (all emails or sepcified emails) and action (block or log).

   Control type	Description
   All emails	Controls all the sending emails. The options is: Record log: Records log messages for all the email sending actions.
   Specific mail items	Controls the specified mail accounts. Select the option button, and configure the control actions to the specified mails.	Block/Audit sender: Controls the sending action according to the sender. Take the following steps to configure: Click sender. In the Sender dialog, type the email account to be controlled into the Sender box. Click Add. The account will be added into the system and shown in the account list below. Repeat step 2 and 3 to add more accounts. To delete accounts, select the account from the list, and then click Delete. In the sender list, select the action for the senders. The action can be Block send, or Record log. Click Ok to save the changes and return to the Email Filter Rule Configuration dialog.
   		Block/Audit recipient: Controls the sending action according to the recipient. Take the following steps to configure: Click recipient. In the Recipient dialog, type the email account to be controlled into the Recipient dialog. Click Add. The account will be added into the system and shown in the account list below. Repeat step 2 and 3 to add more accounts. To delete accounts, select the account from the list, and then click the Delete button. In the recipient list, select the action for the recipients. The action can be Block send or Record log. Click Ok to save the settings.
   		Block/Audi email content: Controls the sending action according to the email content. Take the following steps to configure: Click email content. In the Email Content dialog, click New. In the Keyword Category Configuration dialog, configure the email keyword. For more information about keyword category, see Keyword Category. In the keyword category list, select the action for the categories. The action can be Block send or Record log. To delete the keyword category, select the category, and then click Delete. Click Ok to save the settings.
   		Block/Audit attachment: Controls the sending action according to the attachment. Take the following steps to configure: Click attachment. In the Attachment dialog, type the attachment name in the Name text box. Click Add. The attachment name will be added into the system and shown in the attachment list below. Repeat step 2 and 3 to add more attachments. To delete attachment, select the attachment from the list, and then click Delete. In the attachment list, select the action for the attachment. The action can be Block send or Record log. If necessary, under All attachments, configure the options for all the attachments. The action can be one of the following: Permit send, Block send, Over X M, block. And then select the Record log check box if you want to record the log messages. Click OK to save the settings.
   		Other emails: Specifies actions for other emails. The action can be Block send or Record log.

6. Click Controlled Mailbox to specify the emails to be controlled. By default, the system will apply the rule to all the supported mailboxes.
   1. Click Controlled Mailbox.
   2. Select the check boxes of the mailboxes.
   3. Click OK to save the changes and return to the Email Filter Rule Configuration dialog.
7. Click Exclusive Mailbox to specify the exceptions who will not be contolled by the email filter rule.
   1. Click Exclusive Mailbox.
   2. Type the account of the exception into the Account box. It can be the account of the email sender or the email receiver.
   3. Click Add.
   4. Repeat 2 and 3 to add more accounts. To edit/delete the account, select the account in the list, and then click Edit/Delete.
   5. Click OK to save the changes and return to the Email Filter Rule Configuration dialog.
8. Click OK to save the settings.

If necessary, you can go on to configure the functions of SSL Proxy, Warning Page, Bypass Domain, and User Exception.

Editing an Email Filter Rule

To edit an email filter rule, take the following steps:

1. On the Navigation pane, click Configure > Content > Email Filter to visit the Email Filter page.
2. Select the rule you want to edit and click Edit.
3. In the Email Filter Rule Configuration dialog, modify according to your need.

Deleting an Email Filter Rule

To delete an email filter rule, take the following steps:

1. On the Navigation pane, click Configure > Content > Email Filter to visit the Email Filter page.
2. Select the rule you want to delete and click Delete.

Enabling/Disabling an Email Filter Rule

By default, the email filter rule will take effect as soon as it is created. You can make the rule unavailable to the traffic by disabling it.

To enable/disable an email filter rule, take the following steps:

1. On the Navigation pane, click Configure > Content > Email Filter to visit the Email Filter page.
2. Select the rule you want to enable/disable and click Enable/Disable.

Adjusting the Priority of an Email Filter Rule

The system takes the first-hit-first-serve method for the rules. And for the position of the rules, the upper it is, the higher the priority is. If two rules have the same conditions, the rule with higher priority will be matched. You can adjust the priority of the rules by moving their positions.

Adjusting the priority of a rules, take the following steps:

1. On the Navigation pane, click Configure > Content > Email Filter to visit the Email Filter page.
2. Click Priority.
3. In the Adjust Priority dialog, select a rule and then click the buttons in the right side to move the rule.

   Item	Description
   Up	Move up one position.
   Down	Move down one position.
   Top	Move to the top.
   Bottom	Move to the bottom.

4. Click OK to save the changes.

Viewing Details of an Email Filter Rule

To view details of an email filter rules, take the following steps:

1. On the Navigation pane, click Configure > Content > Email Filter to visit the Email Filter page.
2. In the rule list, click the name of the rule, and you can get the detailed information of the rule in the Details dialog.