LAN Forwarding is the term we use for sending mail from your VPOP3 mail server directly to other SMTP servers. It is called 'LAN Forwarding' because it is usually performed on a local network, but it can often be used across the Internet as well.

LAN Forwarding is different from normal outgoing mail because:

•you have to tell VPOP3 which mail server to send the messages to. It cannot use DNS MX record lookups to find the appropriate server

•VPOP3 assumes the remote server is always available. Connection scheduling is not used with LAN forwarding.

•the LAN Forwarding queue is separate from the normal outgoing message queue.

 

LAN forwarding is mainly configured in the Settings → Local Mail → LAN Forwarding → Configuration page and you can monitor the LAN Forwarding queue in the Queue Status page.

 

You can also set up LAN forwarding in most places where you can specify a target email address, such as in distribution lists or user forwards/assistants. To do this specify the target email address as:

"SMTP:"<email address>"@"[<user>":"<pass>"@"]<server>":"[<port>]

<user>:<pass>@ and :port are optional

 

So, a simple target would be:

SMTP:bob@example.com@192.168.1.1

This will tell VPOP3 to send the messages to bob@example.com on the SMTP server at 192.168.1.1, not using authentication and on the standard SMTP port 25

 

A more complex target would be:

SMTP:bob@example.com@fred:mypass@192.168.1.1:587

This will tell VPOP3 to send the messages to bob@example.com on the SMTP server at 192.168.1.1, logging on using the username 'fred' and the password 'mypass', and sending on the SMTP submission port 587