We had a certificate issued by Verisign and have allowed it to expire as we no longer have need for it.
Clients who have bookmarked the website with a 'https://' URL are greeted with a 'certificate has expired' warning. Some of our documentation may also reference the defunct URL.
Is there someway we can dispense with this warning? Ideally, we would like to simply redirect them to the plain 'http://' version of the website.