apache 2.2 - SSL causing same content on multiple domains

I have setup a Debian LAMP server where I host multiple websites. As far as I know I can only use SSL on one of them, if I'd like to use SSL on two or more sites I'd have to add another IP - so far so good.

The problem is that whenever I type https://siteone.com or https://sitetwo.com it always displays the content from: https://siteone.com. I'd rather it display some error message or something else but absolutely not to display my main site's content (which is where I want the SSL to work).

Note: my Debian web server uses ispconfig as it's control panel.

Answer

Make sure you have your virtual hosts set up correctly such that each virtual host binds only to a single ip address. The Apache documentation for IP based virtual hosting says that your virtual hosts should look similar to the following:

ServerAdmin webmaster@smallco.example.com
DocumentRoot /groups/smallco/www
ServerName smallco.example.com
ErrorLog /groups/smallco/logs/error_log
TransferLog /groups/smallco/logs/access_log




ServerAdmin webmaster@baygroup.example.org
DocumentRoot /groups/baygroup/www
ServerName baygroup.example.com
ErrorLog /groups/baygroup/logs/error_log
TransferLog /groups/baygroup/logs/access_log

The first vitual host listed in your apache config is the default one. Add a fake one before the your first two just to ensure that you are actually matching your virtual hosts, and not just blindly falling into the first one. Here is a more complete article about such a setup from IBM: http://www-01.ibm.com/support/docview.wss?uid=swg21045922