For over a week the same guy has been spamming the guestbook of a site I manage about 20 times a day. The guestbook script is kind of old so it doesn't log or block IPs. I've reported this to the abuse department of the server company that hosts the site the spammer is linking to. I've also added a meta tag so that the guestbook will no longer be indexed by search engines. Any other suggestions on how to stop this? It's a pain to keep removing these entries. One of the guy's websites is www. baikalguide . com. But there are a bunch of other similarly named sites that are all fake sites built purely for SEO purposes.
Try and find him in your log file (or tools like statcounter.com if you have such a thing installed). Then add his IP address in a htaccess file and DENY him.
Why don't you just block him at your router? That our get a more intuative GB script that allows you to ban people like that.
I'm not sure whether he uses the same IP but unfortunately the guestbook doesn't log IP addresses. The only statistics software for this particular site is Analog. This isn't the most comprehensive program but I banned the IP address that visits most frequently using .htaccess as per TOPS30's suggestion. Hopefully I didn't end up banning the website's biggest fan instead of the GB spammer. I guess I'll wait and see if I get more spam.
Use centralops.net and look up the domain name and it will pull up a up address. If not then ping the site name for a ip address. With centralops.net it will list the batch of ip's he's in. Block the 1 ip or the whole batch.
or may be you should use some kind of robot-protecition for your guestbook? generate picture with numbers and get users print it to identify them