Logwatch Filters

I wrote two filters for logwatch to provide inclusion of high-level spamassassin and denyhosts statistics.

DenyHosts is an application that inspects syslog and adds hosts to /etc/hosts.deny after a configurable number of failed logins. I started using it exactly a month ago, and it has so far denied 60 hosts that attempted to connect with ssh. The logwatch filter just includes a section in the daily e-mail telling me what it added to the hosts.deny file.

Spamassassin stats are quite simple, but I wanted a quick overview of what the system was doing. It will include a section like this in the logwatch report:

x messages marked as spam
y messages marked clean
z total messages processed
x percent of mail was spam



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