Hi!
Do a web search on "tiergrubing" (Something like that anyway - the german
term for "tar pit"). I've never done it before but it involves slightly
slowing down the connection the more messages that are sent, thereby tieing
up the spammer. I think I remember reading some people talking about doing
this with qmail...
Eric
KUDLAC Tomas wrote:
>
> Hello,
>
> is there any way how to prevent mail floods with qmail? I can imagine that
> it's impossible to implement such protection that would function in all
> cases (maybe some expert system ;-)), however I need to protect our server
> against cases when somebody decides to send let's say 100000 mails to some
> internal address. Is there any way how to tell qmail to send alarm (or
> perform some action) when number of mails per time interval from one address
> (or domain) grows more than certain limit?
>
> note: I am using qmail at the gateway, it's forwarding mails between
> internet and our internal mail system.
>
> Thanx,
>
> --
> Tomas Kudlac
