Trying to cut down on form spam

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Hi All,
 
I have a 2 page form
 
page 1 = form
 
page 2 = action page (updates database and sends email)
 
So, I am getting a lot of spam. Owner wants very little error checking for maximum input for possible business..
 
So to cut down on spam I added a simple captcha I made - very easy to read with 4 numbers to add to a field and gen_validatorv4.js helps to make sure it is filled out correctly or the form won't submit
 
spam get to be way less...
 
then I added an http referrer field to show where it came from....
 
 
HOWEVER - one kind of spam comes through no matter what I do
 
in the 2 new fields I added (captcha text and referrer) are just more random text entrees .... 

- also changed url for the action page - more spam again within minutes (seems like it would take spammers time to learn this...?)
 
 
it's kind of like spammers are filling out the form - page 1 from some other location and possibly submitting from some other location also?
 
Q: How do I stop this form spam?



--
Thanks,
Dave - DealTek
dealtek@xxxxxxxxx
[db-14]


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