On Fri, Apr 26, 2013 at 08:21:20AM +0100 you wrote:
> iptables -A INPUT -p tcp --dport 25 -m limit --limit 5/min -j ULOG --ulog-prefix "iptables SMTP denied: "
For now I decided to log every connection. It's true. That produces a
lot of log entries. Later, when the problem is cured, I'll reduce log
entries by adding --limit <something>.
Using ulog for that is a good idea.