Strange cyrus quota problem

[Thomas Kirchtag]

I am rather new to cyrus imap. We took over a client who uses it and has a
strange quota problem. One single user keeps getting "Over quota" alerts
although cyrus (as well as the client show very small quota usage (24%...)

The cyrus log file shows sending the alert, a few lines below it shows the
correct quota:

      1 ---------- <username> Thu Nov 24 10:33:21 2011
      2
      3 >1322127201>3 OK User logged in^M
      4 <1322127201<4 namespace^M
      5 >1322127201>* NAMESPACE (("INBOX." ".")) (("user." ".")) ((""
"."))^M
      6 4 OK Completed^M
      7 <1322127201<5 ID ("name" "Thunderbird" "version" "8.0")^M
      8 >1322127201>* ID ("name" "Cyrus IMAPD" "version" "v2.2.12 2005/02/14
16:43:51" "vendor" "Project Cyrus" "support-url" "http://asg.web.cmu.edu
/cyrus" "os" "Linux" "os-version" "2.6.13-15.16-smp" "environment" "Built
w/Cyrus SASL 2.1.21; Running w/Cyrus SASL 2.1.21; Built w/Sleepycat
Software: Berkeley DB 4.3.27: (September  9, 2005); Running w/Sleepycat
Software: Berkeley DB 4.3.27: (September  9, 2005); Built w/OpenSSL
0.9.7g 11 Apr 2005; Running w/OpenSSL 0.9.7g 11 Apr 2005; CMU Sieve 2.2;
DRAC; TCP Wrappers; mmap = shared; lock = fcntl; nonblock = fcntl; a
uth = unix; idle = idled")^M
      9 5 OK Completed^M
     10 <1322127201<6 lsub "" "INBOX.*"^M
     11 >1322127201>* LSUB (\HasChildren) "." "INBOX.Archives"^M
<snip>

    181 * LSUB () "." "INBOX.privat"^M
    182 8 OK Completed (0.010 secs 85 calls)^M
    183 <1322127201<9 list "" "INBOX"^M
    184 >1322127201>* LIST (\HasChildren) "." "INBOX"^M
    185 9 OK Completed (0.000 secs 85 calls)^M
    186 <1322127201<10 select "INBOX"^M
    187 >1322127201>* FLAGS (\Answered \Flagged \Draft \Deleted \Seen
$Forwarded $label1 $MDNSent wartet wartet_auf_entscheidung $label4 zur_info
Jun        k $label2 erledigt $label3 NonJunk $label5)^M
    188 * OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen
$Forwarded $label1 $MDNSent wartet wartet_auf_entscheidung $label4 zur_info
Ju        nk $label2 erledigt $label3 NonJunk $label5 \*)]  ^M
    189 * 77 EXISTS^M
    190 * 0 RECENT^M
    191 * OK [UNSEEN 77]  ^M
    192 * OK [UIDVALIDITY 1307090395]  ^M
    193 * OK [UIDNEXT 2680]  ^M
    194 * NO [ALERT] Mailbox is over quota^M
    195 10 OK [READ-WRITE] Completed^M
    196 <1322127201<11 myrights "INBOX"^M
    197 >1322127201>* MYRIGHTS INBOX lrswipcda^M
    198 11 OK Completed^M
    199 <1322127201<12 getacl "INBOX"^M
    200 >1322127201>* ACL INBOX <username> lrswipcda^M
    201 12 OK Completed^M
    202 <1322127201<13 getquotaroot "INBOX"^M
    203 >1322127201>* QUOTAROOT INBOX user.<username>^M
    204 * QUOTA user.<username> (STORAGE 2441822 10000000)^M
    205 13 OK Completed^M


I gather from this that the server sends the "over quota" alert (    194 *
NO [ALERT] Mailbox is over quota) and a few lines down the server finds that
the user uses 24% of his quota (    204 * QUOTA user.<username> (STORAGE
2441822 10000000))

I tried setting the quota to several different values increasing, decreasing
it from the 10000, even setting it to none but the result is always as
above. I tried running quota -f and restarting cyrus several times without
any result.

I'd really appreciate any suggestions on this.

Regards 
Thomas

PS.: I am aware, that the cyrus version in use is old, yet we cannot change
this at the moment.

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