[Evolution] IMAP Preauthenticated

[David Shifflett <shifflett nps edu>]

How do I configure Evolution such that it doesn't
try and send a username/password (via the LOGIN command)?

My IMAP server is configured to have the users
preauthenticated.
The IMAP server sends PREAUTH as part of the initial
message, but Evolution ignores this
and tries the LOGIN command anyway,
which of course causes IMAP to generate an error
(it isn't expecting a LOGIN command).

The IMAP server is part of a research project
and the user has already been authenticated,
so no login is required (or allowed).
This IMAP server works fine with Mozilla, Thunderbird,
and even Outlook Express.

Thanks for any help,
David Shifflett