On Fri, 21 Nov 2003, Erwin Llave wrote:

> Is it possible to block all outbound mails from certain users except to
> selected domains? This is our situation, We have an exchange server,
> exchange.com and xmail server, xmail.com. There are certain xmail users that
> should not be allowed to send mails outside our network but should still be
> possible to send to exchange.com , so I defined their email addresses in
> filter.out.tab but the problem now is that they also cannot send to our
> exchange.com. These two servers are in the same network.

1) empty smtprelay.tab
2) make every user to use smtp auth
3) remove relay permissions from non auhtorized users
4) handle exchange.com as custom domain with an "smtprelay" line to the 
exchange server



- Davide


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