In order for Border Scout to function email must be passed through a scanning server.
The default mechanism (part of the core services) for achieving this is to amend the MX
record for a particular domain so that inbound mail is sent to Checkbridge infrastructure,
which scans the mail (if the individual address exists in the user database) and forwards
it to the real email server.
The email server is configured to send all outbound traffic to Checkbridge infrastructure, from
where it is forwarded to its destination after scanning. This mechanism is effective, reliable and
simple, and in many circumstances an appropriate solution. However, Checkbridge recognise
that redirecting entire domains is not necessarily appropriate.

In such circumstances Checkbridge can provide a small piece of software for your mail
transfer agent that decides if a particular address should be scanned or not. If it should the
mail is redirected to existing Checkbridge infrastructure over the Internet (via a VPN) or to a
local Satellite that scans email in your data centre. The local Satellite is managed by
Checkbridge in exactly the same way as our other infrastructure.
© Checkbridge 2009