A lot of spam getting through

[Billy A. Pumphrey]

> You should only change it if you have a caching nameserver on the
server
> that is showing a lot of spam. Did you discover whether you are even
> running
> a local DNS server? What does ps show? What was in the file before you
> edited it?
> 
> Steve
> 

I believe the file was blank, I edited when I first set the machine up.
PS shows:

  PID TTY          TIME CMD
28182 pts/0    00:00:01 bash
 2890 pts/0    00:00:00 ps