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1. SeekingSerenity
   Member
   Posted 4 months ago #

   We're having issues with people submitting duplicate contact forms. To automate the deletion of duplicate emails I added the following code to line 16 of contact-form-7/modules/special-mail-tags.php:

   elseif ( '_user_agent' == $name )
                   $output = preg_replace( '/[^0-9A-Za-z.:()\[\], ]/', '', $_SERVER['HTTP_USER_AGENT'] );

   This allows me to send emails with both the remote IP address and the remote user agent. I can then use external email logic to detect duplicates or spammers more easily.

   If it's useful to someone else, great, if not move along quietly... :)

   http://wordpress.org/extend/plugins/contact-form-7/

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