Weird difference after adding a new imap account.

Question

Well, this is weird, unlike my other accounts this is what it looks like when I add new folders on this account.
Anybody have any idea why this would happen? I'm running tiger and the most up to date patches.
powerbook   Mac OS X (10.4.6)  

Answer 1

Read from: http://www.courier-mta.org/?FAQ.html
Q: Can't create folders, only subfolders of INBOX
This is a configuration issue with your mail client. IMAP servers are free to use any folder namespace arrangement that's technically convenient for them. Courier uses "INBOX." as the namespace for private folders, and "shared." as the namespace for public, shared, folders. The IMAP NAMESPACE extension (see http://www.rfc-editor.org/rfc/rfc2342.txt) allows IMAP clients to automatically discover where the server creates folders, and your IMAP client should implement it.
This should be completely transparent to you, if your IMAP client properly uses the NAMESPACE extension. If your IMAP client were to automatically take advantage of self-configuration features offered by RFC 2060 and RFC 2342, it would automatically discover, without any additional configuration from the user, that:
The folder namespace hierarchy separator is the . character
Private folders are stored underneath the "INBOX." hierarchy
Public folders are stored underneath the "shared." hierarchy
If you have to explicitly create folders that are subfolders of INBOX, or if you explicitly have to name that "INBOX.foldername", this is due to your IMAP client not being able to configure itself accordingly.
A: Correct. IMAP servers are free to define any root of the folder namespace tree that's convenient for them. Courier's IMAP server uses INBOX as the folder namespace root, rather than the root hierarchy itself. Courier supports the NAMESPACE IMAP extension which allows compliant IMAP clients to automatically configure themselves so that the folder namespace root is transparent. Submit an enhancement request to have your IMAP client gracefully handle the folder namespace root.
Does this mean that Mail.app isn't rfc compliant when dealing with imap?