On Thu, Jul 31, 2008 at 10:18:22AM -0400, Eric Toczek wrote:
connection onto server 2. User B connects into server 1 and they live on server 1, so proxy_maybe allows the connect to be made direct even though their proxy setting says they go to a specific host (which happens to be server 1)
You mean that just save one imap-login process ?
Also, 2 things which aren't quite clear to me in the Wiki :
a) Password forwarding
Make sure that the authentication succeeds with any given password. You can do this by using empty passwords. v1.1+ requires also that you return nopassword field.
-> Does that mean that the proxy has to accept only empty passwords and that that's the actual imap server that will deal with the actual password ?
The destination host must be set to allow plain text passwords.
Granted, but I guess it's the proxy which must accept empty password ? I don't get where in the picture the empty password stands.
Yes the initial connection can be done using SSL/TLS. What happens is the proxy will do the auth for the user using their password and if it succeeds and they have a proxy attribute setup then the connect is made to the destination host using a plaintext connection. What you can do is setup a dovecot proxy host(s) that has no users assigned to that server and allows only SSL/TLS connections, then on the backend a bunch of servers that users get assigned to but they cannot have: disable_plaintext_auth = yes in the configuration.
Ok, I always use plaintext anyway, usually on SSL/TLS from clients (with a few exceptions for old stuff/bad habits I plan to get ridd off).
-- Thomas Hummel | Institut Pasteur hummel@pasteur.fr | Pôle informatique - systèmes et réseau