Unjustified 'Mailbox is at XX% of quota' messages in Thunderbird

Eric Luyten Eric.Luyten at vub.ac.be
Thu May 6 04:51:53 EDT 2010

On Thu, May 6, 2010 10:46 am, Kõvári János wrote:
> Andrew Morgan írta:
>> On Wed, 5 May 2010, Kõvári János wrote:
>>> Hello all,
>>> I have a problem again.
>>> Just today, all my users, who are using the same shared folder, are
>>> getting "Mailbox is at 93% of quota" (and increasing as they put mail into
>>> the shared folder) messages in Thunderbird (v. on Vista X64).
>>> This has started when one user was putting several dozen bigger emails
>>> into the shared folder, which then reached a "mysterious" level, where
>>> warnings are sent out. The problem is: this shared folder has a 5GB quota
>>> limit and it contains ~930MB of mail only. The quota file says 5GB,
>>> Thunderbird says 5GB,
>>> Cyrus module in Webmin also says the Quota is 5GB, and the usage is at
>>> 19%...  Everything says the Quota is 5GB and it is 19% used. But the
>>> messages still pop up. It seems, the server somehow thinks the quota is
>>> 1GB, of which indeed
>>> 93% is in use, but I have no clue where this comes from. It can't be
>>> confused with user mailbox quotas, because those are at 200MB. The shared
>>> folder is stored on a separate partition with hundreds of gigabytes of
>>> free space. I have reconstructed the mailboxes and folder, and re-checked
>>> the quotas etc.
>>> If anyone has any ideas, I'd be glad to read them! Thanks in advance!
>> Which version of Cyrus are you running?
>> Andy
> Cyrus-imapd 2.2.13


I recall there being a "4 GB wraparound" issue with Cyrus quota in version 2.2


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