certificate for multi domain on a web server with one ip address

[Eric]

Hi,
I created certificates for two domains for example : example1.com and
example2.com, these domain are located on a web server with one ip address.
each domain has a vitual in http.conf . I configed ssl.cnf for these two
domain. I set virtuals for each one. when I restart httpd it has the warning
that these domains have overlap. and when I open browser It could make ssl
only for the first virtual in ssl.cnf and for the second one has error of
certificate.