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Home > Real Estate Webmasters My e-mail is being used for spam? What can I do? I find that displaying your email address and contact info such as a telephone number in an image is very helpful in reducing or eliminating spam and telemarketers. Be sure not to name it emailaddress.jpg as some spammers will target that.
Other Options:
First, remove actual text of your email address from the website.
that's practically begging spammers to take advantage of it. You need to replace it with a GIF image of the text instead. Avoid publishing the text version of your email.
Also, for contact form spam, there are several easy solutions, but they have to be coded into the PHP script. One is to have extra fields in the form whose display is disable through the visibility: hidden property. Then in this field enter some random text. Spammers usually try to insert email header info into every field in hopes that your form isn't secure. You can detect if this hidden field was overwritten.
Also, in PHP, you can test for carriage returns and line feeds, a sure sign that someone is trying to use header injection on your form. They try to insert several thousand "cc:" lines hoping your form will resend their garbage to all those addresses.
These three tricks will probably get rid of 99% of your spam. The final trick is to just have an image of some random characters and have people type them in. You don't have to do any fancy distortion of the image since your site is too insignificant for someone to bother with fancy workaround tricks.
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