I assume you're using AMS for emails?
1.) Open SSC
2.) Unlock the appropriate server group
3.) Right-click the server group -> All Tasks -> AMS -> Configure
4.) Click the plus sign (+) by Symantec Antivirus Corporate Edition
5.) Click the plus sign (+) by Virus Found
Do you have any entries there? What type (Send Internet Mail, Send Page, etc)
If you have Send Internet Mail, make sure that each entry has:
1.) a valid To internet address
2.) a Return internet address in the format of
user@domain.tld (can be real or bogus)
3.) a Subject
4.) a valid SMTP mail server/relay (even though you can use FQDN hostnames, Symantec prefers IP addresses)
Click Next and make sure that you have information in the Alert Message box. Click Finish. Highlight the entry and then click Test Action. You should receive an email.