SonicWALL 4.5 Manuale Utente

138

Enforced Client Product Guide

Using the Email Security Service

7

rather than separate user quarantines? 

Initially, each user’s detected spam is quarantined in an individual user quarantine, where 
you can go to manage that user’s spam. If you prefer to manage all your organization’s spam 
from one location, you can divert all spam to a central quarantine by changing your spam 
disposition. 

than that? 

By default, the protection service blocks all messages containing attachments that are larger 
than 200 MB. These messages are not delivered to users and cannot be retrieved. You can 
change this size limit using 

 on the 

 tab.

6 Do you want to prohibit or approve messages based on the file type of any attachment? 

On the 

 tab, enable 

 and configure a custom filter or one of 

the file type filters. For example, you might want to block potentially dangerous executable 
attachments, such as .

EXE

 files, but specifically allow certain image file types. 

7 Do you want to prohibit or approve messages based on text in the message? 

On the 

 tab, create 

 filters. For example, you might want to allow 

all messages containing the text “résumé” to make sure that no incoming resumes are 
accidentally filtered as spam.

8 Do you want to adjust sensitivity for blocking specific types of server attacks? 

Connection Manager automatically detects attacks against your email server, including 
directory harvest attacks, virus outbreaks, and spam attacks. You can optionally detect email 
bombs and change the sensitivity of blocking for individual types of attacks. 

Configure general administration settings 

Manage general system administration of the email security service on the 

 page. 

To configure administrative settings: 
1 On the SecurityCenter website, click the 

 tab. 

2 Under 

, select 

. 

3 On the portal, click the 

 tab.