You can't force clients to do anything, but you can force users of course. If you just configure Dovecot to only have prefix="" namespace, users who had their clients previously configured with namespace=INBOX. will have to clear the namespace so that they'll see their folders.
I didn't understand what you meant in your original post about the post-login script. I can't think of how that would help here. On 23.11.2010, at 4.54, Joy wrote: > Thanks Charles but i want to force all users to use the dovecot's > default namespace. Is it possible ?? > > > On Mon, Nov 22, 2010 at 11:50 PM, Charles Marcus > <cmar...@media-brokers.com> wrote: >> On 2010-11-22 12:16 AM, Joy wrote: >>> I know that i can change the default namespace configuation of dovecot >>> to work with courier-imap namespace but not willing to do that so >>> suggest me something which can help me doing the same. >> >> Just setup both - the ones already configured to use INBOX. will >> continue to use it, and new ones won't have to specify it... >> >> http://wiki2.dovecot.org/Namespaces >> >> Scroll down to the section: Backwards Compatibility: Courier IMAP >> >> -- >> >> Best regards, >> >> Charles >> >