Proxy Authentication

[Joshua Van Horn]

Hi, 

We are looking at migrating our current mail store (UWash IMAP) to
Cyrus.  One of the first things we need to accomplish is to get a proxy
in front of our existing servers so that we can start moving mailboxes
around to alleviate load issues.

1) Is it possible to configure a Front-end server from the Cyrus Murder
to pass the user's authentication on to the Back-end instead of using
the proxy_authname/proxy_password?

2) Assuming this is possible, will the Cyrus Front-ends "talk" to a
Uwash IMAP store?  This would involved manually updating the MUPDATE
server with the location of the mailboxes.

3) I am hoping that #1/2 will work.  However, if not: Does anyone know
of another IMAP proxy that will accept Kerberos V5 (GSSAPI)
authentication or tie into the Cyrus SASL for authentication?

Thanks, 

Joshua