Block following IP for junction

[kracekumar]

After looking in the Spam, following IPs are causing the problem.
207.244.89.91, 117.224.149.188, 106.67.97.54

[ChillarAnand]

It better to drop packets from these ip's instead of processing the requests which will waste resources.

iptables -A INPUT -s 207.244.89.91 -j DROP

We can maintain spam list in text file and add salt task to block them?