SQL & PL/SQL

Hello

I am running the following using sqlplus login in as sys as sysdba (also tried login as the end user)

SELECT utl_http.request('https://www.accestochina.com', 'null', 'file:C:\wallets', 'XXX - Password has been entered here - XXX') FROM dual;
*
ERROR at line 1:
ORA-29273: HTTP request failed
ORA-06512: at "SYS.UTL_HTTP", line 1722
ORA-12545: Connect failed because target host or object does not exist
ORA-06512: at line 1

The platform I using is

CORE 11.2.0.1.0 Production
NLSRTL Version 11.2.0.1.0 - Production
Oracle Database 11g Release 11.2.0.1.0 - 64bit Production
PL/SQL Release 11.2.0.1.0 - Production
TNS for 64-bit Windows: Version 11.2.0.1.0 - Production

Having spent a while looking into the problem without success any ideas / solution very welocome

Thanks for looking, Pete