On Tue, Mar 1, 2016 at 8:28 PM, Matthias Mandlmeier <matthias.mandlmeier at online.de> wrote: > Hello, > I'd like to read the Client Hostname but when I use the Hostname Value it is > empty. I want to use the Client Hostname for Update the DNS Records on my > DNS Server. Hi, Could you be more specific? The hostname is read from the X-CSTP-Hostname header as sent by the client. Do you see the header in client or server debug log but no environment variable is set? regards, Nikos