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/usr/local/bin/denyhosts_unban #!/bin/bash if [ -z "$1" ]; then echo -e "Error:\n\tProvide IP as the first param" echo -e "Usage:\n\t$0 <IP>" exit 1 fi /etc/init.d/denyhosts stop echo ' /var/lib/denyhosts/hosts /var/lib/denyhosts/hosts-restricted /var/lib/denyhosts/hosts-root /var/lib/denyhosts/hosts-valid /var/lib/denyhosts/users-hosts ...


3

Looking at this previous serverfault question, I suspect that you could use fail2ban to do this. I don't see an obvious way to count emails from senders, though. You might indeed be on your own for scripting this. Also, are you doing greylisting with milter-greylist? That could help reduce the spam volume as well.


0

Dont underestimate the number of entry a RBL can return too. Like SORBS list DHCP range. I tell that as you gonna hit a iptables limits/bottleneck. Some says its around 25k on a 32bit system. Edited: A hypothecal example: If one of your customer get black listed, that would mean he cant send you email request (wich is normal) and he wont be able to go at ...


7

Here is why I think that is a terrible idea: Contrary to what you seem to believe, spam RBLs aren't a particular good or well-liked concept. They are in widespread use only because their contribution to the anti-spam fight outweighs their numerous drawbacks (often just slightly). I am sure you have heard about errors, outages and other problems related to ...



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