MX Failover (Mail Bagging) How It Works

Default Configuration	Postini Configuration

During primary mail server downtime only, incoming messages flow to Webservio's SpamWeeder gateways. These gateways then deliver the messages to the mx failover service where they are held until your mail server is available.	All incoming messages flow through the Postini filtering system. If your primary mail server is unavailable, Postini delivers the messages to Webservio's mx backup service where they are held until your mail server is back online.