[UnderHost]

A Smart Host is a SMTP server that will accept mail from another server and then deliver the mail for that server.



For example, server1 is setup to use server2 as a smart host.



Anytime someone sends e-mail on server1 it is automatically relayed to server2 regardless of the MX entrys for the domain.


Server2 then accepts this message, looks up the proper delivery host/IP and attempts to deliver the message to that host.


To configure a smart host, create

PHP Code:

/etc/exim.conf.local 


and add the following lines.



Be sure to change to the hostname or ip of the smart host server:

PHP Code:

 @ROUTERSTART@
            smart_route:
                driver = manualroute
                domains = !+local_domains
                transport = remote_smtp
                route_list = * host.name.of.smart.host.server 


Next run

PHP Code:

/scripts/buildeximconf 


Then run

PHP Code:

/scripts/restartsrv_exim 


Thats it, watch the logs for a bit to make sure it's working!