Best way to prevent automated/spam form filling? ASP/VB

Hi,
I wanted to ask what your advice would be with regard the
best way of
preventing the automated submission of forms on a web site?
We have tried using form validation, but it seems that the
spammers have
already sussed this and are submitting valid data, albeit it
is usually
something along the lines of:
Name: wuehtasdgadfl
Title: ahadlf
Address: audhliuhwerlj
City: akjsdhiehrlj
Email: [email protected]
What is the best way to stop this happening? Or at least
reduce it!
Much appreciated.
Regards
Nath.

> When you say "Test the form content server side..." is
that what the built
> in Dreamweaver behaviour (validate form) does?
No. That's client-side validation using javascript. It's
vulnerable in
that disabling js in the browser will still allow you to
submit the form,
but will not do any validation. The automated bots that spam
your forms
don't do the validation when it's client side.
By server-side validation, I mean to submit the form to an
ASP, PHP, CF,
CGI, etc., script that actually examines the contents of each
field and
decides whether to send the email.
> With the sum field, do you mean that you'd ask the user
to enter a number?
Yes. See how I have done it here -
http://great-web-sights.com/g_contactus.asp
> If so, what happens when the spammers suss that out and
start submitting
> the correct number?
If the 'spammer' is a human reading the instructions and
submitting the
form, you can't do anything about it. I think that's not the
case with
these things though.
Murray --- ICQ 71997575
Adobe Community Expert
(If you *MUST* email me, don't LAUGH when you do so!)
==================
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- Template Triage!
http://www.projectseven.com/go
- DW FAQs, Tutorials & Resources
http://www.dwfaq.com - DW FAQs,
Tutorials & Resources
http://www.macromedia.com/support/search/
- Macromedia (MM) Technotes
==================
"Nathon Jones" <[email protected]> wrote in
message
news:[email protected]...
> Hi Murray,
>
> When you say "Test the form content server side..." is
that what the built
> in Dreamweaver behaviour (validate form) does?
> If not, would you have a link to a tutorial on how to do
that (for
> ASP/VB)?
>
> With the sum field, do you mean that you'd ask the user
to enter a number?
> If so, what happens when the spammers suss that out and
start submitting
> the correct number?
>
> Much appreciated
> Regards
> Nath.
>
> "Murray *ACE*" <[email protected]>
wrote in message
> news:[email protected]...
>> Test the form content server side and always have a
field like this -
>>
>> Please enter the sum of 3 and five minus one:
>>
>> If that field doesn't contain "7", don't send the
email....
>>
>> --
>> Murray --- ICQ 71997575
>> Adobe Community Expert
>> (If you *MUST* email me, don't LAUGH when you do
so!)
>> ==================
>>
http://www.dreamweavermx-templates.com
- Template Triage!
>>
http://www.projectseven.com/go
- DW FAQs, Tutorials & Resources
>>
http://www.dwfaq.com - DW FAQs,
Tutorials & Resources
>>
http://www.macromedia.com/support/search/
- Macromedia (MM) Technotes
>> ==================
>>
>>
>> "Nathon Jones" <[email protected]>
wrote in message
>> news:[email protected]...
>>> Hi,
>>>
>>> I wanted to ask what your advice would be with
regard the best way of
>>> preventing the automated submission of forms on
a web site?
>>>
>>> We have tried using form validation, but it
seems that the spammers have
>>> already sussed this and are submitting valid
data, albeit it is usually
>>> something along the lines of:
>>>
>>> Name: wuehtasdgadfl
>>> Title: ahadlf
>>> Address: audhliuhwerlj
>>> City: akjsdhiehrlj
>>> Email: [email protected]
>>>
>>> What is the best way to stop this happening? Or
at least reduce it!
>>>
>>> Much appreciated.
>>> Regards
>>> Nath.
>>>
>>
>>
>
>

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