Hi,
My setup: Dovecot 2 latest, installed to replace courrier IMAP, and off course configured with the dot separator and all folder under INBOX.*.
The problem: My phone was driving me mad during the test, due that it will only recognize Inbox.
How found the solution: I've started sniffing IMAP traffic on my server and ended up with one difference: On courier it ask for namespace, on dovecot it won't.
I gives a better look, and noticed that courier show namespace capability on prelogin banner, adding it too solved the problem.
Reason: Android ICS stock client seems do not honor the capability gived after the login.
Request: Maybe is possible to put namespace capability in prelogin banner for the next version? That will solve trouble with a setup like the mine and android stock email client.
Thank you, Best regards Sent from Galaxy Nexus