cannot see folders list on Dovecot IMAP server

This new CentOS server (Postfix 2.10 and Dovecot 2.2) has a handful of users who are connecting using IMAP. None of them can see any of the folders, neither "Inbox", "Sent", nor any of the other ones. Sending e-mail works fine, arrives at recipient's mailbox, but doesn't show in sender's mail client.
What am I missing?
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

zolcerAuthor Commented:

Postfix delivers all e-mail to /var/mail by default.
Dovecot uses Maildir.
Tell Postfix to also use Maildir by adding  "home_mailbox = Maildir/"  to and all is fine ...

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
nociSoftware EngineerCommented:
Alternative: use dovecot as mda.  (then the MTA delivers mail i one stream to the MDA and the MDA dispatches it to the right mailboxes.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Email Protocols

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.