On 23.05.2018 12:31, Rupert Gallagher wrote:
Dovecot does not clear the subscription file from non-existent folders.
Hi!
Thank you for your bug report. Unfortunately this is not a BUG, but mandated behavior by RFC3501, see last two paragraphs in the excerpt.
Aki Tuomi
6.3.6. SUBSCRIBE Command
Arguments: mailbox
Responses: no specific responses for this command
Result: OK - subscribe completed NO - subscribe failure: can't subscribe to that name BAD - command unknown or arguments invalid
The SUBSCRIBE command adds the specified mailbox name to the server's set of "active" or "subscribed" mailboxes as returned by the LSUB command. This command returns a tagged OK response only if the subscription is successful.
A server MAY validate the mailbox argument to SUBSCRIBE to verify that it exists. However, it MUST NOT unilaterally remove an existing mailbox name from the subscription list even if a mailbox by that name no longer exists.
Note: This requirement is because a server site can choose to routinely remove a mailbox with a well-known name (e.g., "system-alerts") after its contents expire, with the intention of recreating it when new contents are appropriate.