Jacob Anawalt:
> Hello,
>
> When I look at my mail.warn file (log level warn or greater), or grep
> mail.log for warning messages, I am presented with a flood of 'Name or
> service not known', 'address not listed for hostname', and 'numeric
> hostname' messages. I run a small site yet mail.warn log has 16k lines
> since yesterday and 14k of them are one of the those messages.
man egrep
man fgrep
In particular look for the -v and -f options.
It's easier to throw away information than not having the information
when you need to investigate a problem report.
Wietse
