sftp-server log messages

[Sachin Gupta]

Hello,

Where does sftp-server logs its messages ?
I am using centos 5.2. I used the following command in my sshd_config.

Subsystem       sftp    /usr/libexec/openssh/sftp-server -l DEBUG3 -f DAEMON

But I do not see any log messages in /var/log/messages.

Thanks
Sachin