I got a call from a Croydon Hills today (where I’m not actually working) because they had a problem with their Linux Proxy server. I SSH’d in and found that squid wasn’t starting, which meant no proxy…
I had a bit of a look round, and found the logs were full of arpwatch entries, which while looking at the manual I found can also be emailed to the root* user.
That was when I found root’s mailbox contained 2,274,574 messages totalling 1.7Gb of disk space! Not surprisingly, squid wasn’t starting because the server was out of disk space….
In my defence, I didn’t set the proxy server up, just kept it running.
* root is the superuser (Administrator) on a unix (linux) computer.