The only way to do this is for your application to load the url, determine if it is a 404 or not, and then give the appropriate URL to the browser. Once the browser clicks a link and leaves your site, you don't have any more control over it.

We're not surrounded, we're in a target-rich environment!

In reply to Re: Redirect if hyperlink fails by jasonk
in thread Redirect if hyperlink fails by kmiles

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