Good one isn't it?
Are you running wireshark on your laptop?
Is there a firewall running on your Zenoss server? As root, run:
iptables --list -v
I have a line like:
| 0 | 0 ACCEPT | udp -- any | any | anywhere | anywhere | state NEW udp dpt:syslog |
The Zenoss server's firewall would block stuff before it gets to zensyslog.
Cheers,
Jane