I’m running competition on my site. Submission through CF7, there were no CPACHA or QUIZZ because owner did not want it. Comments are disabled on that page. For whole year it was OK. Yesterday I started to get submissions 5/min, they all look the same.
What I already did:
1. Checked site statistic – I don’t see a lot of traffic
2. Add Quizz – didn’t help
3. Put IP’s into black list – didn’t help (some of submissions still come from black listed IP’s)
4. Contacted hosting support, they switched on whatever antispam they had. Still didn’t help.
At some point I was thinking that somehow e.-mail was ripped off and those submissions are send not through the CP7 page. But when I add line to the form so I could see IP in the mail body, new submissions started to coming in new format.
That’s all the data I have. Please help. How should I fight it? It should be possible to block those IP’s but I don’t know how to do it other way than I already did.