You can configure Email Reputation to block messages from known or suspected sources of spam. You can also create exclusions to allow or block messages from other senders. To configure Email Reputation:

1. Log on to the WFBS web console. Click Start > All Programs > Trend Micro Worry-Free Business Security Advanced.

2. Go to Security Settings > Exchange Group > Configure.

    

   Refer to this solution if the MSA is installed and not showing in the WFBS console: Messaging Security Agent (MSA) is missing from the Security Server web console or appears offline. 
3. Select Anti-Spam > Email Reputation.
4. From the Target tab on the Email Reputation page, update the following as required:
   • Enable real-time Anti-Spam (Email Reputation)
   • Service Level
     • Standard: The Standard service uses a database that tracks the reputation of about two billion IP addresses. IP addresses that have been consistently associated with the delivery of spam messages are added to the database and are rarely removed.
     • Advanced: The Advanced service level is a DNS, query-based service like the Standard service. At the core of this service is the standard reputation database, along with the dynamic reputation, real-time database that blocks messages from known and suspected sources of spam.
   • Approved IP Addresses: Email messages from these IP addresses will never be blocked. Type the IP address to approve and click Add. If required, you can import a list of IP addresses from a text file. To remove an IP address, select the address and click Remove.
   • BlockedIP Addresses: Email messages from these IP addresses will always be blocked. Type the IP address to block and click Add. If required, you can import a list of IP addresses from a text file. To remove an IP address, select the address and click Remove.
5. Click Save.

To configure content scanning:

1. Log on to the web console and go to Security Settings > Exchange Group > Configure.
2. Select Anti-Spam > Content Scanning. 
3. Select the Target tab to select the method and spam detection rate that the MSA will use to screen for spam:
   1. Select the detection level. You can choose low, medium (recommended), or high, from the spam detection rate list.

   2. Add addresses to your list of Approved Senders and Blocked Senders.

      You can block domains or email address of known spammers on this section.

   3. Click Detect Phishing incidents. This will enable the MSA to screen out Phishing Incidents.

4. Select the Action tab to set the actions that the MSA will take when it detects a spam message or phishing incident.

    

   The MSA detects spam messages in real time and takes actions to protect the Microsoft Exchange Clients. The MSA can take any of the actions below depending on your configuration.
   • Quarantine message to server-side spam folder.
     • The MSA will move the message to the user's Spam Mail folder located on the server-side of the Information Store.
   • Delete entire message.
     • The MSA will delete the entire message and Microsoft Exchange will not deliver it.
   • Tag and deliver.
     • The MSA will add a tag to the header information of the email message that will identify it as spam and will then deliver it to the intended recipient.
5. Click Save.