Re: [courier-users] Read-only-IMAP / shared folders

[Sam V. <mr...@co...>]

Bernd Wurst writes:

> Hi Sam.
>
> Am Donnerstag, 14. April 2011, um 13:06:34 schrieb Sam Varshavchik:
> > > Is there a way to have this? Is it possible without setting up shared
> > > folders?
> > No, that's the very definition of shared folders.
>
> It's a little difference if I only have some virtual accounts pointing to the
> same maildir or if I have to set up shared folder indexing and stuff...
>
>
> Is there a way to set up folders that are only shared with some users and not
> with everyone?
> Or is this done by denying access for "anyone"?

This can be done with virtual shared folders and access control lists. The  
accounts must be different accounts, the server configured for shared  
folders, and the IMAP client must fully support IMAP public namespaces.

If the IMAP client also fully supports IMAP ACLs, the owner of the account  
will have full control over who has access to which folders, directly from  
the IMAP client. Otherwise, the permissions will need to be adjusted  
manually using the maildiracl command.

All of this will require some non-trivial amount of setup. Once it's set  
up, though, additional shared folders and accounts can be trivially added.