Cyrus Imap
Though it seems that there are other interfaces available (probably more user friendly ones, using web interfaces etc) the way we can configure cyrus-imap is with cyradm.
See: Cyrus System Administration, Chapter 9 of O'Reilly's "Managing Imap". (Yes, this is so complicated, they wrote whole books about it!)
To start talking to cyradm as the administrator you want to execute (on einstein):
cyradm -user cyrus localhost
and supply the password for the usual password scheme for cyrus.
Granting A User Access to a Folder
To allow non-owner users to access folders (a.k.a. "shared" folders), the access control list (ACL) for that folder has to be modified. This is done with cyradm's setaclmailbox command:
setaclmailbox mailbox username rights
From the above O'Relly page:
| Right | Purpose |
|---|---|
| l | Look up the name of the mailbox (but not its contents). |
| r | Read the contents of the mailbox. |
| s | Preserve the "seen" and "recent" status of messages across IMAP sessions. |
| w | Write (change message flags such as "recent," "answered," and "draft"). |
| i | Insert (move or copy) a message into the mailbox. |
| p | Post a message in the mailbox by sending the message to the mailbox's submission address |
| c | Create a new mailbox below the top-level mailbox (ordinary users cannot create top-level mailboxes). |
| d | Delete a message and/or the mailbox itself. |
| a | Administer the mailbox (change the mailbox's ACL). |
The can be mixed, and there are aliases for common combinations, like "read" for read-only permission. For more, see the O'Reilly page.
