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Email Security 9.0 User Guide

Anti-Spam

Email Security uses multiple methods of detecting spam and other unwanted email. This chapter reviews the configuration information for Anti-Spam:

Spam Management

By default, the Adhere to System Defaults check box is selected. To configure your own settings, deselect this check box.

To manage messages marked as definite spam or likely spam:
1
Navigate to the Anti-Spam > Spam Management page.

2
Choose the action for messages marked as Definite Spam:
 

Response

Effect

No Action

No action is taken for messages.

Store in Junk Box
(default setting)

The email message is stored in the Junk Box. It can be unjunked by users and administrators with appropriate permissions. This option is the recommended setting.

Tag With

The email is tagged with a term in the subject line, for example [SPAM]. Selecting this option allows the you to have control of the email and can junk it if it is unwanted.

3
Chose the action for messages marked as Likely Spam. Use the same definitions as above and tag with unique text such as [LIKELY].
4
Select the Accept Automated Allowed List check box to allow automated lists that are created by User Profiles to prevent spam. With this feature enabled, User Profiles analyze the recipients of emails from members of your organization and automatically added them to Allowed Lists.
5
Click Apply Changes to save and apply changes to this screen.

Anti-Spam Aggressiveness

The Anti-Spam > Anti-Spam Aggressiveness page allows you to tailor how aggressively the Email Security product blocks spam to your mailbox. You can check the box at the top of the page to Adhere to System defaults.

 
* 
NOTE: Configuring this page is optional.

General Settings

Use the following settings to specify how stringently Email Security evaluates messages:

Setting

Description

Mildest

You receive a large amount of questionable email in your mailbox. This is the lightest level of aggressiveness.

Mild

You are likely to receive more questionable email in your mailbox and receive less email in the Junk Box. This can cause you to spend more time weeding through unwanted email from your personal mailbox.

Medium

You accept Email Security’s spam-blocking evaluation.

Strong

Email Security rules out greater amounts of spam for you. This can create a slightly higher probability of good email messages in your Junk Box.

Strongest

Email Security heavily filters out spam. This creates an even higher probability of good email messages in your Junk Box.

To customize the spam blocking aggressiveness for General Settings:

1
Set Grid Network Aggressiveness.

The GRID Network Aggressiveness technique determines the degree to which you want to use the collaborative database. Selecting a stronger setting makes Email Security more likely more responsive to other users who mark a message as spam.

2
Set Adversarial Bayesian Aggressiveness.

The Adversarial Bayesian technique refers to SonicWall Email Security’s statistical engine that analyzes messages for many of the spam characteristics. This is the high-level setting for the Rules portion of spam blocking and lets you choose where you want to be in the continuum of choice and volume of email. This setting determines the threshold for how likely an email message is to be identified as junk email.

3
Select Apply Changes.

Category Settings

The Category Settings allow you to select the level of aggressiveness for specific categories of spam. Use the following settings to specify the level of aggressiveness:

 

Setting

Description

Mildest

This setting allows you to view most of the email messages that contain terms that relate to the category.

Mild

This setting allows you to be able to view email messages that contain terms that relate to the category.

Medium

This setting forces Email Security to tag email messages with this content as Likely Junk.

Strong

This setting more likely tags email messages with this content as Definite Junk.

Strongest

This setting tags all email messages with this content as Definite Junk.

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NOTE: You can select the Strong setting for messages containing a specific category, such as sexual content, and a Mild setting for a category you may be less concerned about, like bulk emails.

To customize the spam blocking aggressiveness for Category Settings:

1
Select the following settings for each of these categories:
Set Sexual Content.
Set Offensive Language.
Set Get Rich Quick.
Set Gambling.
Set Bulk Emails.
Set Images.
2
Select Apply Changes to save the settings.

Languages

The Anti-Spam > Languages page gives you the option to Allow All, Block All, or have No Opinion on email messages in various languages. By default, the Adhere to System Defaults check box is selected and the options for customizing is grayed out. To configure your own settings, deselect this check box.

To customize the language settings:
1
Chose one of the following options for each language listed:
Allow All—Allows all email messages in a language without any screening.
Block All—Blocks all email messages in a language.
No Opinion—Allows email messages in a language to be screened by all filters installed in Email Security.
2
Select Apply Changes to save the settings.

Address Books

Use Anti-Spam > Address Books to allow or block people, companies, or email lists from sending you email. This page shows a compilation of allowed and blocked senders from your organization’s lists, as well as lists provided by default.

 
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NOTE: Some of the entries were added by your organization, and appear on every user’s list. These entries are indicated with a dimmed check box. You do not have access delete them from your list.

Using the Search Field

To search for an address:
1
Select the Allowed or Blocked tab.
2
Enter all or part of the email address in the Search field.
3
Customize your search by selecting or de-selecting the People, Companies, Lists, Corporate, or Personal checkboxes.
4
Click Go to perform the search.

Adding to the Address Book

To add People, Companies, or Lists to the Address Book:
1
To add items to your Allowed list, click the Allowed tab. To add items to your Blocked list, click the Blocked tab.
2
Click the Add button. The Add Items window displays.

3
From the drop down menu, select the type of item you are adding. The options are People, Companies, or Lists.
4
If you selected People, type the email address in add in the space provided. Separate multiple entries by a comma.

If you selected Companies, specify the domains to add in the space provided.

If you selected Lists, specify the mailing lists to add in the space provided.

5
Click Add to finish adding to your list.

Deleting from the Address Book

To delete People, Companies, or Lists to the Address Book:
1
To delete items from your Allowed list, click the Allowed tab. To delete items from your Blocked list, click the Blocked tab.
2
Click the check box next to the items you want to delete.
3
Click the Delete button.
4
To delete all items from your list, click the Delete All button. You will have to select the type of item you want to delete (People, Companies, Lists). Then, click Delete All.