Answer
GMS Anti-Spam can apply filters at many levels in order to block unwanted email. This means that unwanted mail can be blocked very efficiently using the different filters available.
For example, when a connection occurs, GMS Anti-Spam can check the connecting address to see if it is in a list of known bad adresses. If it is, the connection will immediately be rejected, rather than allowing any further traffic to occur.
Filters can also be applied to all users in a domain, or to a single user alone – this allows complete flexibility when setting up your GMS Anti-Spam installation.
Keywords:Filter filters multi level