I have a problem with using webmail in ISPconfig.. originally someone set the server's hostname to be www.abcdef.com (domain does not exist) during the installation of the linux -- a Fedora Core 6. After that we installed the ISPconfig and webmail, etc... Later we determined to use www.accoladedns.com as the hostname. We changed the /etc/hosts and /etc/sysconfig/network to update the hostname, then reboot --- everything works fine and the hostname now becomes www.accoladedns.com. However when we use the webmail by visiting http://www.accoladedns.com:81/webmail, it will automatically "jump" to http://www.abcdef.com:81/webmail since www.abcdef.com does not exist.. of course the browser will return an error. Can someone tell me in what way can I tell the webmail (or is it actually postfix?) that the hostname has been updated? Thanks in advance.