Problem with SSL configuration

[Fredy]

Hi
I just setted up my Apache 2.0.52 on WinXP with SSL and changed the httpd.conf in order to assign an area of SSL enabled folders. Parts of the httpd.conf is listed below.
I would like to have a virtual host named "vtiger", which is accessible only over a SSL connection. And only this host name should be accessible over SSL.

My problem now is, that not only the URL "https://vtiger" works but also "https://vtiger-3", where "vtiger-3" is the computer name. How can I prevent this behaviour? The webpage should not be accessible over "https://vtiger-3" - how can I achieve this?

Thanks and regards

Fredy

httpd.conf
----------
#
...
Listen 192.168.2.24:80
Listen 192.168.2.24:443

# SSL settings
SSLMutex default
SSLRandomSeed startup builtin
...
#
ServerName Vtiger-3:80
...
DocumentRoot "C:/Programme/Apache Group/Apache2/htdocs"
...
<VirtualHost *:443>
ServerName vtiger
DocumentRoot "c:\Programme\Apache Group\Apache2\htdocs\vtigerCRM4_Beta\vtigerCRM"
SSLEngine On
SSLCertificateFile conf/Vtiger-3.crt
SSLCertificateKeyFile conf/Vtiger-3_server_neu.key
</VirtualHost>