Hello,  

I've setup Dovecot and Postfix mailing systems.  The protocol is imap.  Now, I've realized that there are no "sent items, drafts" boxed under Maildir for each users.  I would like to take back up Inbox, sent items, draft boxes.  For sent items box, it seems to be stored in outlook client file which is "ost".  The configuration parameters and version is as follows.  I can see that "namespace" has been configured.  How can I setup to see these folders?

Thank you for your support!

I believe these folders (sent, draft etc.) are created by the MUA on first IMAP connexion. Can you confirm that these folders are created when you connect to your IMAP account for the first via a mail client ?

If you are accessing your e-mail via a webmail, make sure to configure your webmail to create those folders for you. For example, with roundcube the config is :

$config['drafts_mbox']            = 'INBOX.Drafts';
$config['junk_mbox']              = 'INBOX.Junk';
$config['sent_mbox']              = 'INBOX.Sent';
$config['trash_mbox']             = 'INBOX.Trash';
$config['create_default_folders'] = true;

Yassine.