[Dovecot] saving to imap folders and namespace settings

[Gustavo Sansone]

hello everyone, i'm new to this list
im running dovecot as imap+pop (2.1.12) and roundcube (0.8.4) as 
client.

having problems on saving to imap folders, with errors on some accounts

my folder structure is as follow:

/home/user/.maildir
/home/user/.maildir/.Drafts
/home/user/.maildir/.Junk
/home/user/.maildir/.Sent
/home/user/.maildir/.Trash
/home/user/.maildir/.Archives
/home/user/.maildir/.Archives.2010
...

i'm very confused with the namespace settings. i don't understand what 
is the correct way to configure it.
don't need public or shared folders.

on dovecot.log i can see this error with my account (and all the 
others), but it seems to work ok using roundcube:
imap(gsansone): Error: autocreate: No namespace found for mailbox: Junk

with a few accounts, i have this on roundcube log:
IMAP Error: Could not save message in Drafts in 
/var/www/localhost/htdocs/mail/program/steps/mail/sendmail.inc
with error on saving to imap folder in roundcube UI

send you attached the output of 'dovecot -n' and the roundcube 
configuration related to folders.

does anyone have any suggestion?

thanks in advance.


--
G. Sansone
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