We searched about this topic here and found lot of posts that cover different parts from this topic but we didn't find and answer for our solution.
Problem:
Questions:
Thanks Alex
A lot of people want to know whether you can install multiple SSL certificates on a single domain. The answer is yes.
From a single IP address and port, you can use multiple SSL certificates to secure various websites on a single domain (e.g., www.yourdomain.com, site2.yourdomain.com) or across multiple domains (e.g., www.domain1.com, www.domain2.com).
Note: In order to have a multi-domain certificate validated and issued, it is necessary to complete the validation process for every SAN separately (receive the approval emails, upload the activation file to the root directory of every website, create the CNAME record for every domain name and/or subdomain included to ...
In most cases, you'll only need one SSL certificate for your domain. But in certain cases, you might need two certificates for a single domain.
Unfortunately it is not currently possible to have multiple SSL certificates issued to multiple domains on a single IP address. There has to be a one to one relationship between SSL certificate, domain and IP. So you only option is to get additional IP address for the server.
You can use Host Headers to partially solve the problem, but inferring from your question I assume you have already encountered this and disregarding it as a viable option. Just incase anybody is googling and finds this question:
Host Headers allows you to bind a single certificate (multidomain or wildcard) to multiple domains on a single IP address, for example:
sub1.mydomain.com
192.168.0.1 > sub2.mydomain.com > SSL: *.mydomain.com
sub3.mydomain.com
More info on how to configure this can be found here:
http://www.sslshopper.com/article-ssl-host-headers-in-iis-7.html
Another option is using different port than 443 with same ip.
Plus; have a look: Using Host Headers and SSL in IIS 7 (without the ugliness of appcmd)
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