DenyUsers not working

From: Vin (vkundur@yahoo.com)
Date: 02/26/03 

From: "Vin" <vkundur@yahoo.com>
Date: Tue, 25 Feb 2003 21:32:17 -0500

To deny a user userxyz from login to a solaris machine using ssh I added
the following entry to sshd_config file.
DenyUsers userxyz

For some unknown reason this doesn't seem to work.Am I missing anything ?

Any help would be highly appreciated.

Thanks
Vin