Comment 2 for bug 119358

I agree that this is a very serious problem for many naive users. At least some
very widely used IMAP servers disallow unencrypted connections; I think this is
actually required by the IMAP spec. So the new account wizard should
*definitely* ask the user if the connection is to be encrypted. Better yet, it
should try it both ways and figure it out on its own.

Also, some imap servers (like uw-imapd) require the client to present a
directory name where the IMAP folders are kept, and will not work without it.
This is common enough that the new account wizard should prompt for this setting
as well.