rejecting botnets with sendmail

Res res at
Wed Nov 1 22:30:27 GMT 2006

On Wed, 1 Nov 2006, Denis Beauchemin wrote:

> DAve a écrit :
>> Denis Beauchemin wrote:
>>> Andoni Auzmendi a écrit :
>>>> Experiencing the recent increase in spam from botnets, is there a way to
>>>> reject (or discard) connections coming from servers containing their ip
>>>> address within the hostname? I can see lots of connections from
>>>> broadband or dialup addresses. Some of them even bypass greylilst as
>>>> they resend the messages several times. We use Sendmail here and I guess
>>>> there must be a milter which is capable of doing that.
>>>> Andoni Auzmendi
>>> Andoni,
>>> This saved us:
>>> FEATURE(`dnsbl',`',`"554 Rejected " $&{client_addr} " 
>>> found in"')dnl
>> What list is this? I don't see it on the website.
> Dave,
> It's an aggregate of:

its equivelant to just using  ""



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