I need to purchase a new UCC certificate from GoDaddy. I need to replace an existing standard SSL cert - mail.domainname.com with a UCC certificate with multiple domains / common names on my server (so that I can have webmail.domainname.com and autodiscover.domainname.com). The standard cert is already in use on the company server.
Unfortunately I cannot generate a new UCC certificate at GoDaddy with mail.domainname.com as it gives an error saying a certificate with the same name already exists (mine). GoDaddy say that I must revoke the original certificate on their website management page before i can produuce the new one.
My question is, will this stop services to the server working whilst I am in limbo between the old and new certificate. There will be some 'down' time between revoking the old and installing the new. The certificate is used for Outlook Anywhere, Webmail and Activesync. How does the server at my customer's premises know that the certificate has been revoked? When you go to webmail for example, does internet explorer contact both the customer's server and then GoDaddy to check if the certifcate is still valid. Or if I revoke the certifcate will everything continue to work?
Please help? thanks.