As far as I can tell, the template seemed to to be correct even if the site was down. I admit to correct the problem I editted the httpd.conf file directly as I had done with other Apache servers.
The bit that I can't work out is that I do nothing at all to the server configuration, not even look at the server manager and the website goes from working to not working.
Would you be so kind to, very briefly, tell me how to edit the template for httpd.conf so I can fix this annoying problem?