HI All We are currently using Exchange 5.5. We have 2 sites connected over a 64K lease circuit thru X.400 connector. These are 2 different Windows Domain having 2 way trust relationship. Both sites are under same Email Domain(xyz.ae) and main site has IMS service which send & receive mails for both the sites and distributes. Now our main site is going to migrate from Exchange 5.5 to Exchange 2003 with Windows 2003 but other site still will be using Exchange 5.5 and connecting with us. Now please suggest me the way I can connect both the sites with new scenario and providing all services as before. WE share GAL, Public folder and OWA which is installed on our main site. I will highly appreciate your response. Thanks Zafar Disclaimer: Information contained in this e-mail and in any of its attached files, including replies and forwarded copies, is confidential and intended solely for the addressee(s) and may be legally privileged or prohibited from disclosure and unauthorized use. If you are not the named addressee, you may not use, copy or disclose this information to any other person. If you have received this message in error then please notify the sender immediately and delete all copies of the email and its associated files. If you are not the intended recipient, any form of reproduction, dissemination, copying, disclosure, modification, distribution and/or publication or any action taken in reliance upon this message or its attachments is prohibited and may be unlawful. Any views or opinions presented in this email and its attachments are solely those of the originator and do not necessarily represent those of the Cupola Information Group.