monitoring

Wireshark

for checking out how a particular IMAP was working (or not working)
filter: port 143

http://www.youtube.com/watch?v=__SR6JO6l-A

sudo aptitude install munin-node

sudo aptitude install munin 

sudo vi /etc/munin/munin.conf

a simple host tree

[wsf.grassrootsconnection.org]
address 127.0.0.1
use_node_name yes

Skipping this for now -- and I think this assumes both munin and munin-node on one server:

As a security measure, we are going to change so the node bind itself to the loopback interface.
So go and edit /etc/munin/munin-node.conf and make sure the host value looks like this: