I tried to create a new Virtual Server using example.com and I receive the following error “Failed to create virtual server : The DNS domain example.com is already hosted by your DNS server”. The example folder is created under /home/example but does not show up of the virtual servers to select.
Hmm, is the DNS for that domain already part of BIND in your server though? You may want to review your DNS zones in Webmin -> Servers -> BIND, and there you can check if this particular domain is already listed in BIND.
i commented the “duplicated” zone in BIND main config file. (that was previously written by a backup)