That is a nice captcha.. most of them are so hard for people to read
that it discourages some people, and I am dealing with people who
have brain tumors.
What my form does is ask the simple question: is this brain tumor
related. Defaults to no. If they don't change it to yes before
submitting it, the message is not sent and they get a page saying the
message did not go through because we only accept brain tumor related
messages - and to go back and select "YES" for brain tumor related if
it is brain tumor related.
When I first did it I logged all of the submissions to see if I
was blocking real ones. I had a lot of spam before adding that. A
few people did submit a real question and get blocked by that
feature, but I checked and all of them went back and fixed it. I no
longer get the automated spams. About 90% of all submissions were
spam before. Now about 1% - and they are done by actual people who
would get by the captcha anyway.
At 09:51 AM 10/10/2011, you wrote:
>Hi Al
>
>I replaced all email addresses with a coldfusion email form and then started
>getting a bunch of automated spam. Putting in an image based challenge that
>the sender must manually replicate stopped all the spam dead.
>The form is at
>http://www.clergyleadership.com/email.cfm
>
>Rob
>
> >
> > I had the same problem.. what I did is store the email addresses
> > in
> > a database and then replace the email link with a link to a feedback
> > form on your website. When people want to email someone, they click
> > the link, fill out and submit the form. They never get to see the
> > actual email address.
> > In my case, I needed to stop the recipients from getting spam,
> > so
> > I have the emails going into a queue where I have to approve them
> > before they are sent. I check it every few hours - just a page of
> > all
> > of the emails. Usually easy to spot bad ones.. and I have a radio
> > button for send / delete next to each one. Takes a few minutes a
> > day.
> > and got rid of 100% of spam to the recipients.
> > I just use an autonumber to link them, but you can use a UUID so
> > people can't easily guess the sequence. ( I use a form field to make
> > it a little harder.)
> >
>
>
>
>
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