On 2014-08-16, Alex <[email protected]> wrote:
> Hi Ted,
>
> Didn't know about iplsearch, that's neat. I guess the drawback with 
> dnsbl is that it's not very granular with the choice of blocking ip 
> addresses. I cant really block say a /28 for example. Your approach 
> would be much better for this. At the moment with the dnsbl I am stuck 
> with knocking out a single IP, a /24 or /16 or /8 (cant imagine EVER 
> knocking out a /8, that's just insane).
>
> Is there an iplsearch equivalent that can do MySQL table lookups? I am 
> really trying to shift away from flat files where possible and have 
> everything in one central database.

apparently not, If you've not invested too much effort into mysql you
might consider using postgresql instead. which can do CIDR lookups.

> For the moment DNSbl seems to be working a treat, the same clowns who 
> are slipping through the cracks got an unexpected surprise this morning 
> during their usual spam run (I have fail2ban also setup which monitors 
> the exim rejectlog for the string which matches a connect reject due to 
> dnsbl listing then firewalls out the IP for a few hours (stops them 
> trying again and again and again and again and again)). Quite hilarious. 
> I am literally sitting here laughing whilst watching the reject log. One 
> small battle against the sneaky spammers where I am winning.

greylisting might be another tactic you could use, greylist them for
an hour or however long is sufficient for them to find spamhaus,

-- 
umop apisdn


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