Problem with Expired rules

Hi,

We have a problem with Messaging Server 2005Q4.

We configure some expired rules, but that doesn't work at all.
 
The messages never expire according to the rules in the 
file /opt/SUNWmsgsr/config/store.expirerule 
 
Here the store expired rule contents:
server{root}398: cat /opt/SUNWmsgsr/config/store.expirerule 
regle_6month_gt.Folderpattern: user/.* 
regle_6month_gt.Foldersizebytes: 104857600 
regle_6month_gt.Messagedays: 4 

Here a mail account content with some messages that should expire:
server{root}399: /opt/SUNWmsgsr/sbin/imcheck 
------------------------------------------------------------------------
----- 
NAME: user/admin 
EXISTS: 0 
LAST UID: 0 
UID VALIDITY: 1192043494 
SUB: 0 
ACL: admin      lrswipcda        
------------------------------------------------------------------------
----- 
NAME: user/eallard 
EXISTS: 18 
LAST UID: 588 
UID VALIDITY: 1192042981 
SUB: 0 
ACL: eallard    lrswipcda        
 
MsgNo   Uid  Internal Date     Size SFlags UFlags   Original-Uid   
Message-id 
------------------------------------------------------------------------
----- 
    1     1 20071006091835     2195 000000 000000 1192042981-1     
<98344825302885.Kpo8Xylb11@peaky> 
    2     2 20071006092501     1893 000000 000000 1192042981-2     
<237708525.47292272221287-9mZB87q3Y0PQT0dZR+AlfA@xxxxxxxxxxxxxxxx> 
    3     3 20071006093925     3246 000000 000000 1192042981-3     
<01c80860$9b20f490$99379356@dwjennings> 
    4     4 20071006095037     3851 000000 000000 1192042981-4     
<44de01c8081f$de1bc770$531a0c96@Pete> 
    5     5 20071006095447     2741 000000 000000 1192042981-5     
<01c807e6$df6fae90$d5c7227d@dtreslar> 
    6     6 20071006101609     2615 000000 000000 1192042981-6     
<000901c2fcab$04e8cf67$b6146d83@fgyvvi> 
    7     7 20071006102227     4441 000000 000000 1192042981-7     
<7317y05744.373q47457564-A9qBHzCM0sQAvxtiuMwx3w@xxxxxxxxxxxxxxxx> 
    8     8 20071006102456     5730 000000 000000 1192042981-8     
<01c80823$5dea4190$e82db655@dwgiftshopkenyam> 
    9     9 20071006105016    23828 000000 000000 1192042981-9     
<01c807ee$8ad03190$2501057c@ohta> 
   10    24 20071006154524     4273 000000 000000 1192042981-24    
<168301c80851$9b0b6e90$4a8086d2@Millicent> 
   11    25 20071006160707    24356 000000 000000 1192042981-25    
<01c8081a$e44e5590$53c91b42@peterb> 
   12    26 20071006162258     4543 000000 000000 1192042981-26    
<422a01c80856$93c1a410$f3e84c5b@Eliza> 
   13   536 20071011234141    38497 000000 000000 1192042981-536   
<03c701c80c7a$44e941e0$d6f3000a@pentagram> 
   14   537 20071011234922    38819 000000 000000 1192042981-537   
<003001c80c7a$d86525b0$d6f3000a@RND_WORD> 
   15   538 20071011235126    36630 000000 000000 1192042981-538   
<001801c80c7a$8701ba80$d6f3000a@dactylic> 
   16   567 20071012043244    10916 000000 000000 1192042981-567   
<b12801c80ca9$4b873b76$bca2f153-stNJT1mnmxs@xxxxxxxxxxxxxxxx> 
   17   568 20071012045808     4668 000000 000000 1192042981-568   
<256b01c8072d$a00edaf0$50af6650@Brittney> 
   18   569 20071012052409     2422 000000 000000 1192042981-569   
<sjvynhuUPYBAeagle1-/wvCPmv6SvYTjfjEsPSlEQ@xxxxxxxxxxxxxxxx> 
------------------------------------------------------------------------
----- 
NAME: user/eallard/Brouillons 
EXISTS: 0 
LAST UID: 0 
UID VALIDITY: 1192045419 
SUB: 1 
ACL: eallard    lrswipcda        
primary partition 00 - ff started 
user/eallard/INBOX: exists (18) largest (38819) oldest (1191676715) 
qused (215664) 
user/eallard/INBOX: purging 
user/eallard/Brouillons: exists (0) largest (0) oldest (0) qused (0) 
user/admin/INBOX: exists (0) largest (0) oldest (0) qused (0) 
server{root}401:  
 
Here the log, as you can see nothing is done (no message expired): 
[12/Oct/2007:10:11:00 -0400] pqcoura imexpire[18441]: General Notice: 
Expire started (0) 
[12/Oct/2007:10:11:00 -0400] pqcoura imexpire[18441]: General Notice: 
primary partition: expired 0 messages 
[12/Oct/2007:10:11:00 -0400] pqcoura imexpire[18441]: General Notice: 
Expired 0 messages 
[12/Oct/2007:10:11:00 -0400] pqcoura imexpire[18441]: General Notice: 
Expire finished 
 
Could somebody help us about it?
Thank you for your help!