Hi All, This is my 3rd email for the below mentioned problem. I am writing this email in the hope that someone will reply and say if it can be done or not. Just yes or no will do for me so that I know it is possible or not. Successfully configure reverse proxy HTTPS but proxy with RPC Over HTTPS Squid 2.7STABLE6 Windows 2008 Exchange 2007 Having issue with RPC over HTTPS, below is the error message Attempting to ping RPC Endpoint 6001 (Exchange Information Store) on server hubsexchange.airarabiauae.com Failed to ping Endpoint Additional Details An RPC Error was thrown by the RPC Runtime. Error 1818 1818 Please let me know what could be the problem, some hint. //Remy ------------------------------------------------------------------------------ Disclaimer and Confidentiality This material has been checked for computer viruses and although none has been found, we cannot guarantee that it is completely free from such problems and do not accept any liability for loss or damage which may be caused. Please therefore check any attachments for viruses before using them on your own equipment. If you do find a computer virus please inform us immediately so that we may take appropriate action. This communication is intended solely for the addressee and is confidential. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. The views expressed in this message are those of the individual sender, and may not necessarily be that of ISA.