Mailinglist Archive: opensuse (4054 mails)

["Carlos E. R." <robin1.listas@xxxxxxxxxx>]

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The Tuesday 2006-01-03 at 19:59 -0500, James Knott wrote:

> Ken Schneider wrote:
> > I can see the dynamic IP's being blacklisted for an ISP but not the
> > static used for the email servers for that ISP. After all the ISP has no
> > control over the users that fail to keep their PC's secure.
> > 
> 
> And by what method are others supposed to know what addresses are from
> DHCP & static ranges? Are there even separate ranges?

Not really difficult. You only have to query one of those "internet police 
sites" that list such things, like sorbs. It is easy enough to activate in 
postfix or spamassassin.

In fact, if you do a reverse dns search on a dynamic IP it is guessable 
when they are dynamic; sometimes the info is obtainable from the wohis 
database.

- -- 
Cheers,
       Carlos Robinson

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