[thelist] how to stop email form spam

WebMaster Webmaster at lchb.com
Fri Sep 28 16:28:04 CDT 2007

Yes, we needed to include a message warning visitors that our forms will
not process URLs and will divert the visitor to an error page instead.
But that's been working really well for us (we invite people with a
legitimate reason to share a URL to telephone us instead). 

-----Original Message-----
From: thelist-bounces at lists.evolt.org
[mailto:thelist-bounces at lists.evolt.org] On Behalf Of Shawn K. Quinn
Sent: Friday, September 28, 2007 12:34 PM
To: thelist at lists.evolt.org
Subject: Re: [thelist] how to stop email form spam

On Fri, 2007-09-28 at 15:11 -0400, r937 wrote:
> in addition to all the other techniques suggested, do a quick search 
> of the form fields to look for the string of characters "http://"
> if my script finds that in one of my form fields, it sends back a
> 403 Forbidden

Unfortunately, this also prevents legitimate Web site links, and is also
easily sidestepped.

Shawn K. Quinn <skquinn at speakeasy.net>


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