default index page problem

[pawan]

of late, if a site is pointed to ispconfig server(in DNS record of domain registrar), instead of showing the default index page, as it used to show, now I am getting one of the website as default(if no domain is created for the domain in question).

Example:
a new domain example.com is registered and its A record is pointed to the ip of my ISPCONFIG server, but no domain is created in ISPCONFIG control panel than when browsing that domain used to show a default ISPCONFIG index page, but don't know from when, but now it is showing one of the sites from my server.

Your help is needed to address this problem.
Thanks.

[till]

apache will show the first website that it finds for the same IP address in alphabetical order.

The easiest way to get a specific site in the first place that shall be shown when a vhost does not exist is to add a prefix. For example.com:

1) Rename the domain of the website example.com to: 0000-example.com
2) Add example.com as aliasdomain to the website 0000-example.com

The domain 0000-example.com does not have to exist in dns.