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From Henrik K <h...@hege.li>
Subject Re: DNS ISP Host List Available
Date Mon, 02 Jun 2008 14:33:10 GMT
On Mon, Jun 02, 2008 at 03:29:44PM +0200, Matus UHLAR - fantomas wrote:
> > > On 30.05.08 15:37, Larry Ludwig wrote:
> > > > IMHO regex setups are even more reliable we do this with our postfix setup.
> > > >  
> > > > For example:
> > > > /^c-.+-.+-.+-.+\..+\..+\.comcast\.net$/                         REJECT
> > > > dynamic ip address use isp for outgoing email - access.regex
> > > > 
> > > > I think is more reliable than just by name or especially by IP since IP
> > > > allocations do change.
> 
> > On Mon, Jun 02, 2008 at 01:28:21PM +0200, Matus UHLAR - fantomas wrote:
> > > looking at 20_dynrdns.cf we see that there are MANY forms of marking
> > > dynamically allocated space. The score of RDNS_DYNAMIC dropped in the past
> > > (there were FP's reportet iirc) and now it's mostly used in conjuction with
> > > other rules.
> > > 
> > > If your regexp's are THAT efficient, share them with us please.
> 
> On 02.06.08 15:14, Henrik K wrote:
> > 20_dynrdns is lame and no one is really updating it. It doesn't even strip
> > domains, resulting in hosts like smtp.dynamic1.com to match. It's pretty
> > cumbersome to use the meta headers too. It needs some revamping to be more
> > useful.
> 
> Is there a bugreport for this? Or do youfind it better to whine and not try
> to make it better?

There are many bug reports, what good does it do if noone has the time to
act on them?

> > That's why there are plugins like Botnet and my BadRelay[1] (which handles
> > domains properly). My tool is pretty outdated too, I haven't updated it
> > since I started blocking and greylisting suspicious hosts directly at MTA.
> > Not much passes through.
> 
> BotNet was afaik reported to have FP's for ISPs. That's why I do not use it.

Botnet blocks what you configure it to block. SA rules are forced on you.


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