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emailcaptchaspam-prevention

Gibberish spam - what does this mean?

There seems to be a bot attempting to spam through my contact form - attempting to send hundreds of emails with PURE gibberish:

1vvQZe mnfxobzahiga, [url=http://dxicyigwtdyn.com/]dxicyigwtdyn[/url], [link=http://hhulyjnulbvz.com/]hhulyjnulbvz[/link], http://nfggzmenyqcl.com/

I'm really trying to keep from using captchas on my site, but this is getting ridiculous.

  1. can anybody explain exactly what these spammers are trying to do?
  2. what non-captcha lengths can i go through to detect them? keep in mind that they are switching IP's every email
Solution

  • A solution that often helps when fighting against spam, that is used by several blogging-engines (I use it on my blog, and it's not bad), is akismet : they provide a free service for personnal use -- and there is some service for commercial use too.

    I've never used their API directly, but, basically, I suppose you send it the comment, and you get in return an information saying "spam" or not.