I found this very very old mailing list post:
https://dovecot.dovecot.narkive.com/xBrr4hMG/save-failed-to-inbox#post39
It seems to be kind of similar to my problem but it's 18 years old and
about dovecot 1.x.
On a whim I tried temporarily disabling the quota (and imap_quota)
plugin. And I was able to save messages! So it looks like it's related
to the quote plugin, just like it in the 18 year old mail thread.
But I still have no clue how to properly debug or fix this.
Any help or ideas would be appreciated!
Sincerly,
Markus Bach
IT-Administration
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On 4/16/25 12:15, Markus Bach via dovecot wrote:
Hello,
I have a curious problem. We are running a Debian bookworm server with
dovecot 2.3.19.1.
We have a lot of shared mailboxes and most of them are behaving just
fine.
But we have a problem with one shared mailbox: Users aren't able to
save messages in it even though they have the right to. This issue
popped up, when a user
This mailbox is set up like every other shared-mailbox, so I don't
think it's a permission problem. We tried it with several users giving
them the same access rights and always got an error when trying to
save a mail in the shared mailbox.
I didn't find anything that could help in the log files. Even after
turning on `mail_debug` I can't even see the try to save a message in
the logs.
Some of the things I've tried so far without any success:
* doveadm force-resync
* increasing the quota for the shared-mailbox
* disabling the quote for the shared-mailbox
* recreating the Sent folder in the shared-maiblox.
Does anybody have any idea how I can debug this further or where the
issue could be?
Mit freundlichen Grüßen
Markus Bach
IT-Administration
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