Hi, I'm new to OTRS, and looking at installing it on a CentOS server with Apache (and mod_perl). However, the server is currently hosting numerous websites and e-mail accounts under different domains (i.e. virtual sites), and I would like to provide an OTRS "instance" for each domain. So, for example, foo.com would have a website www.foo.com, and should have its own OTRS "instance" (and associated tickets, users, etc.), whereas bar.com has a website www.bar.com hosted on the same server, and should have its own OTRS "instance". I believe I could achieve this by having multiple installations of OTRS; however, that would then become a nightmare to support with say hundreds of virtual sites running from the same server (an upgrade or patch would have to be applied to hundreds of installations). So what I require is one OTRS installation, with individual config and database for each virtual site. In fact, I don't really mind if there is only one database (this might even be preferable), but the tickets/users etc. of foo.com have to be completely separate (and inaccessible) by bar.com's tickets/users etc. Please could someone advise if this is possible? I have trawled the documentation, web, mailing lists etc. and have not found an answer, let alone any config to achieve it. Thanks in advance, Gary