~# spamassassin -D pyzor < ~abuse/Maildir/new/1211380929.V801Ic04fM701311.mx2
[12963] dbg: pyzor: network tests on, attempting Pyzor
[12963] dbg: pyzor: pyzor is available: /usr/bin/pyzor
[12963] dbg: pyzor: opening pipe: /usr/bin/pyzor check < /tmp/.spamassassin12963MwNYaWtmp
[12963] dbg: pyzor: [12964] finished: exit=0x0100
[12963] dbg: pyzor: check failed: no response
[12963] info: rules: meta test DIGEST_MULTIPLE has undefined dependency ‘DCC_CHECK’

The no response seemed bad. However:

# wget http://www200.pair.com/mecham/spam/sample-spam.txt
# spamassassin -D pyzor <sample-spam.txt
[12961] dbg: pyzor: network tests on, attempting Pyzor
[12961] dbg: pyzor: pyzor is available: /usr/bin/pyzor
[12961] dbg: pyzor: opening pipe: /usr/bin/pyzor check < /tmp/.spamassassin12961WKN9Tptmp
[12961] dbg: pyzor: got response: 82.94.255.100:24441 (200, ‘OK’) 82 0
[12961] dbg: pyzor: listed: COUNT=82/5 WHITELIST=0
[12961] info: rules: meta test DIGEST_MULTIPLE has undefined dependency ‘DCC_CHECK’

So actually I’m figuring Pyzor is working fine (this is with spamassassin installed via package on debian etch and use_pyzor 1 in local.cf). Got the idea from here.