[Dovecot] Deleting deleted eMails

[Michael Weisgerber]

Hello 2gether,
 
I am using Dovecot 1.0.rc15 together with Outlook (I apologize) via IMAPS.
Now I discovered, that all the old eMails, I marked for deleting, are still
there, even the veeery old ones. Dovecot is marking the eMails (I am using
maildir configuration) files with an "ST" extension. Is there any switch to
turn on garbage collection and maybe a screw to tune the duration until
deletion?
 
Thanks for your help!
 
Michael Weisgerber