E - restricts the ping to the RPC/HTTP proxy only. The ping does not reach the server. Useful when trying to establish whether ...

-E - restricts the ping to the RPC/HTTP proxy only. The ping does not     reach the server. Useful when trying to establish whether the RPC/HTTP     proxy is reachable. Also, you must specify security package (-u) and      authentication level (-a) in order to use this option. To specify an      HTTP proxy, use the -R flag. If an HTTP proxy is specified in the -o      flag, this option will be ignored.   -q - quiet mode. Does not issue any prompts except for passwords. Assumes     'Y' response to all queries. Use this option with care.      -c - use smart card certificate. RPCPing will prompt user to choose     smart card.      -A  - specifies the identity to authenticate     with to the HTTP proxy. Has the same format as for the -I option.      Also, you must specify authentication schemes (-U), security package      (-u) and authentication level (-a) in order to use this option.      -U  - the authentication schemes to use for     HTTP proxy authentication. This option is a list of numerical     values or names separated by comma. E.g. Basic,NTLM. Recognized values      are (names are not case sensitive:         Basic - 1 or Basic         NTLM - 2 or NTLM     You must specify security package (-u) and authentication level (-a)      in order to use this option.  -r  - if multiple iterations are specified, this     option will make rpcping display current execution statistics     periodically instead after the last call. The report interval is given     in seconds. Default is 15.      -v  - tells rpcping how verbose to make the output. Default     value is 1. 2 and 3 provide more output from rpcping.  -d - launch RPC network diagnostic UI          Example: Find out if your Exchange server that you connect through RPC/HTTP is accessible:     rpcping -t ncacn_http -s exchange_server -o RpcProxy=front_end_proxy         -P "username,domain,*" -H Basic -u NTLM -a connect -F 3 When prompted for the password, enter it. exchange_server is the name of your exchange server, front_end_proxy is the name of your proxy, username and domain are your user name and domain as you would enter them in the Outlook prompt. The other parameters will ask rpcping to ping your Exchange server in exactly the same way as Outlook will connect to it for the typical profile.