xinetd qpopper error message on redhat 7.1

[Jephe Wu]

Hi,

I am using redhat 7.1 and qpopper 4.0.3 in xinetd. I have too much pop3
users ,I got the following error message in /var/log/messges

 xinetd[29898]: execv(  ) failed: No such file or directory (errno = 2)

my configuration is /etc/xinetd.d/pop3

service pop3
{
        disable = no
        socket_type     = stream
        protocol        = tcp
        wait            = no
        user            = root
        server          = /usr/local/sbin/popper
        server_args     = qpopper -F -S -c -s -R -T120
        port            = 110
        instances       = 50
}


but looks pop3 services is available , why?

thank you very much!
Jephe