I want to allow our external webserver to use our zimbra server to send mail as those from our domain. I enabled authentication on the server and at the moment the smtp code on the webserver can't do authenticated smtp. This a virtual company so everybody connects across the net to their mail.

So is it possible to configure Zimbra to accept the IP address of the webserver as a trusted user/system or r there any other ways i might be able to get this to work.

Thanks Nick