I've got a mod_perl feed-back form that sends mail to a specific address.. Spammers have their bots hitting the form now. The tricks I know of are:
- generate a random image of numbers and make the user type in the numbers on the form. Painful for the user and spammers probably have OCR! - require an email and send a confirmation email (like a list subscription) and whitelist some email addresses. But we want to allow anonymous submissions. - limit submissions by IP number to one every X minutes. AOL users may get blocked. - md5 the submission and block duplicates (should do this anyway). BTW -- what would you recommend for caching the md5 strings. Cache::Cache or DBM? I suppose a Cache::Cache file cache would be the easiest. Any other ideas on the "easy to implement" side? -- Bill Moseley [EMAIL PROTECTED]
