Someone noticed a problem with a site I manage in that somewhere all the old alternative domain names which we keep paying for were in the Google search results. Some problem had come up somewhere possibly with a .htaccess file and now Google has indexed alternative domains displaying our main website (ouch.. SEO)
Once I let google honour the 301 redirects I've added back into the .htaccess from those old domains, is it actually worth having them resolving to our website at all?
Would I lose anything by just not setting the DNS at all, and just keep them renewing indefinitely not pointing at anything?