Over quota when not

[Richard Gilbert]

We have been happily running cyrus-imap 2.2.12 on a Solaris 10 system 
(installed from Blastwave) for years.  I now have a problem with a 
user's quota which I don't understand.

Usage as reported by cyradm lq, lqr and by the equivalent IMAP query all 
report that the user is at 78% but when they login, after selecting a 
folder they get a "Mailbox is over quota" error.

The user's quota file in /var/imap/quota contained:

3604871753
4500000

The actual filestore in use is consistent with the 3.6 GB usage figure 
above.  I tried running quota -f on the mailbox but that did not make 
any difference.  I deleted the quota file and this had the effect of 
disabling quotaing for the user.  This would appear to be a workaround 
for the user but not really a satisfactory solution.

The 4.5 GB quota was subsequently reinistated.  Initially the quota file 
contained

2285158
4500000

which looks like the amount of mail received after the quota was 
reinstated.  After running quota -f it went back to a similar number as 
before, equivalent to 78% usage, but still with the "Mailbox is over 
quota" error.

How can I correct this problem?

Thank you in anticipation.

Richard
-- 
Richard Gilbert
Corporate Information and Computing Services
University of Sheffield, Sheffield, S10 2TN, UK
Phone: +44 114 222 3028   Fax: +44 114 222 3040