Too much spam with Mail Security for Exchange
Exchange Server 2010
Symantec Mail Security For Exchange 22.214.171.1248
Premium antispam enabled and configured.
A lot of users are complaining about excessive spam. I'm looking at one user's mailbox and they have 20 spam messages in 1 hour this morning. This user complains about an average of over 100 per day that they just delete.
In the Premium AntiSpam Actions I have if message is spam, reject. If SCL > 5 then add to subject line suspected spam. There is no "Suspected Spam" emails.
I verified that the license is still current and I am using Rapid Release schedule with today's definitions.
What else can I do?
Should I enable to disable exchange's built in spam filters?