Proxy/Reverse proxy with ISPConfig3 ?

[cat5]

I'm in the process of moving from an old Slackware install where I did *everything* by hand, including adding reverse proxy requests to be re-directed to an internal server.

I can't seem to figure out how to do this through ISPConfig3.

What I required, is a subdomain based redirect, ie:

webmail.domain.com -> http://192.168.0.3/webmail

How can I do this in ISPConfig3?

[Horfic]

when your webmail is working for that domain.
you can add a subdomain in ispconfig and select the L(when you want to keep webmail.domain.at) or R (when you want to use http://192.....) at redirect type and write in the redirect path your http://192....