If you run dovecot 0.99, it's .subscriptions; if you run dovecot 1.0, it's subscriptions - so adjust as necessary. It is always located in the Maildir/ directory itself - take a look at your own personal maildir folder and it should be pretty obvious.
The contents should be the name of the subfolder itself. Again, looking at your personal folder and just copying the idea to the shared one should be all you need to do.
Thank you for your help. The location of the subscriptions file is now clear.
The situation is getting better: mutt does not see the read-only maildir, even if I have two subscriptions file in Maildir/ and in CONTROL directory (empty directory). thunderbird now sees the folders in the read-only Maildir/ no matter what was specified in the subscriptions files (again, I have them under both Maildir/ and CONTROL). And I can subscribe/unsubscribe to them. But if I click on the name of the folder, thunderbird says: Mailbox does not exist. And there is absolutely nothing in dovecot's log.
If it matters, I use Edgy, hence dovecot 1.0rc2, mutt 1.5.13 and thunderbird 1.5.0.10.
Again, thank you for your help. By the way, do you have working read-only folders? If yes, would you please send me the details?
Best regards, A.
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