As In Search of L33t says, comment spam can be a large scale annoyance. In L33t's words:
I am promising myself I am going to start blogging more. The main problem is that I am so tired of blog spam. Even with the comments turned off I am still getting blog spam. It depresses me a little to see so many blog comments that have absolutely nothing to do with my topics.
I have similar blog spam levels:
mikal@daedalus:~/blog-comments$ du -sh 79M . mikal@daedalus:~/blog-comments$ find . -type f -name "*.no" | wc -l 6064 mikal@daedalus:~/blog-comments$ find . -type f -name "*.blocked" | wc -l 4778 mikal@daedalus:~/blog-comments$ find . -type f -name "*.yes" | wc -l 483
Yes, that really is 79 meg of blog comments (admittedly including the metadata for recent comments). The most interesting bit is that blocked line. That's the number of posts which have been automatically blocked since I started automatically blocking some posters. It's been really effective, I get around one or two comment spams in my email for moderation a day now. The super secret algorithm? I block these IP addresses:
84.19.184.26 85.255.117.250 203.142.1.182 202.71.106.121 85.249.136.194 202.76.235.6 202.75.62.79 202.75.49.130 202.75.49.134 202.75.49.133 202.75.49.131 193.87.17.120
I recommend others give it a try, as it's eliminated basically all of my comment spam. That's right, it appears to me that almost all comment spam comes from these few IPs.
Tags for this post: blog(
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posted at: 12:37 | path: /diary/spam | permanent link to this entry
#2 Wade Mealing
Great ;)
I'll have to give this a go, a little shell script and iptables.. and I'll report back with how it goes after a week. :)
Wade
#4 Wade Mealing
Very good advice, I've only clocked up about 200 since this time ! I am surprised that such a large amount of blog spam came from so few addresses.