• Only inbound mail filtering (MX filtering): Messages addressed to the Client MX are redirected to Tiscali Services Datacenter, filtered and sent back cleaned to the Client MX.
• Inbound and outbound mail filtering (MX and relay filtering): Messages addressed to the Client MX are redirected to Tiscali Services Datacenter, filtered and sent back cleaned to the Client MX; Outbound Messages are redirected to Tiscali Services Datacenter, filtered and delivered.
• It is also possible to integrate other RBL filters (Black list) in the filtering chain.

The three levels of protection are further detailed in the next section.