IMSVA policies are rules that are applied to SMTP and POP3 email messages. Create rules to enforce your organization’s antivirus and other security goals. By default, IMSVA includes a Global Antivirus rule to help protect your network from viruses and related Internet threats. Because an antivirus rule addresses the most critical and potentially damaging types of messages, you should always keep it in the first position on the rule list so IMSVA can analyze traffic for virus content first.
The antivirus rule does not protect against spam. For the best protection against spam, configure a custom rule that includes spam in the scanning conditions, and activate the IP Filtering product.
Before creating a new policy, ensure that you have defined the internal addresses. See Configuring Internal Addresses for more information.
How the Policy Manager Works
You can create multiple rules for the following types of policies. Use policies to reduce security and productivity threats to your messaging system:
Antivirus: Scans messages for viruses and other malware such as spyware and worms.
Others: Scans spam or phishing messages, message content, and other attachment criteria.
An IMSVA policy has the following components:
Route: A set of sender and recipient email addresses or groups, or an LDAP user or group to which the policy is applied. You can use the asterisk (*) to create wildcard expressions and simplify route configuration.
Filter: A rule or set of rules that apply to a specific route, also known as scanning conditions. IMSVA contains predefined filters that you can use to combat common virus and other threats. You can modify these predefined filters or define your own filters.
Action: The action that IMSVA performs if the filter conditions are met. Depending on the filter result, a filter action is performed that determines how the message is finally processed.
To filter policies that display in the policy list:
Click Policy > Policy List. The Policy screen appears.
Configure the Filter by options:
Specify a route:
All routes: Displays all policies
Incoming: Displays policies that only monitor incoming messages
Outgoing: Displays policies that only monitor outgoing messages
Both directions: Displays policies that monitor "incoming", "outgoing", and "incoming and outgoing" messages
POP3: Displays policies that only monitor POP3 messages
Specify the type of protection the policy provides:
Viruses and malware
Spam and phishing email
Specify the users the policy protects:
[Find user or group]