Using the Spam module, I have tried to define filters to block posts containing domains of type .tk because they are mostly spam. The regular expression filters I've used are the following:
- 'tk'
- '.tk'
- /.tk/i
None of them could avoid spammers include links with the tk top level domain in their signatures. I'm wondering what I could have done wrong.
Are my regular expressions faulty, or doesn't the Spam module check signatures? In either cases, how can I solve the problem?
