No exire on subsolders

[Heinrich Peters]

Hello,

I am using Cyrus Imap on Debian (2.2.13-19+squeeze1). I have configured my spam-folder to expire messages automatically after 31 days. If I add a subfolder to my junk-folder, the messages expire after 31 days, too.

How can I stop this behavior? This is the info output for both folders:
localhost.localdomain> info Junk
{Junk}:
  expire: 31
  lastpop:
  lastupdate:  4-Aug-2011 04:20:41 +0200
  partition: default
  size: 941565
localhost.localdomain> info Junk.Training
{Junk.Training}:
  lastpop:
  lastupdate:  4-Aug-2011 04:01:00 +0200
  partition: default
  size: 15635

Thanks!
Heinrich
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