Hi,
this is possible:
Use the rules wizard to create a rule to file the messages to a specific folder.
http://<your scalix servername/Scalix/rw
Or use the sxaa tool from the admin ressource kit to create this rule:
http://www.scalix.com/wiki/index.php?ti ... source_Kit
But in the latter case beware of bug 14810:
http://bugzilla.scalix.com/show_bug.cgi?id=14810
Cheers,
Christoph