SurferTim's example didn't include 'http://' for the host.
Yours:
client.println("Host: http://venard.hostzi.com\r\n");
SurferTim's:
client.println("Host: www.mydomain.com"\r\n);
SurferTim's example didn't include 'http://' for the host.
Yours:
client.println("Host: http://venard.hostzi.com\r\n");
SurferTim's:
client.println("Host: www.mydomain.com"\r\n);