I've set up RH9.0 to act as our local mailserver (running Sendmail/fetchmail) to pickup mails from 10 external pop3 mailboxes from our webhost, and is correctly distributed to the users on the network. All internal network users can send each other emails without the mail going onto the internet.
However, when the sales guys are out of the office they pick up their mail from the pop3 mailbox on the web(using the webmail interface provided by our webhost). So how do we make sure mails from the office get out to the internet to be delivered to the external pop3 mailboxes. we do not want to run our mailserver ( for our domain) locally, since reliability/uptime, is a key issue for us.

would appreciate some advise to sort this out.

Hi..

Dont deliver the local mails directly to the Linux box. forward directly to ur ISP mail box and configure the keep copy option in fetchmail so that a copy will be leaved in ur ISP mailbox. so always one copy will be maintained in the external box.

Regards
Siddiqu.T