I've got a RHEL 4 AS box running whatever the latest version of syslog that RedHat has blessed is. I want to pipe authpriv.* to a FIFO that a custom script will read and process. I've verified that my script can read from the FIFO by piping test messages into it, but syslog won't write to it.

Here's the important part of syslog.conf
authpriv.*      |/var/ip2deny.fifo
And yes, I've restarted syslogd. Any suggestions?