Hi. Previously we had one Exchange Server 2003. Now we have two more Exchange 2003 clusters installed on Windows server 2003 member server. We moved some mailboxes from old exchange to the new Exchange Clusters. Users of these moved mailboxes can send mails to anywhere, but do not receive mails from users having mailboxes in old exchange server and Internet as well. Users of moved mailboxes can receive mails from each other only. Outlook 2003 generates error message when send/receive button in presses as bellow Task Microsoft Exchange Server reported error 0X8004010F the operation failed. An object could not be found. BTW I have no problem with offline Address Book. I need to solve it like all the users can send/receive mails to/from any user and Internet, no matter where their mailboxes reside. Please suggest me as soon you can. Best Regards, Osman Mahmud Senior System Administrator Banglalink ********************PRIVATE AND CONFIDENTIAL******************** This electronic message transmission and any files transmitted with it, are a communication from the law firm of Shughart Thomson & Kilroy, P.C. This message contains information protected by the attorney/client privilege and is confidential or otherwise the exclusive property of the intended recipient or Shughart Thomson & Kilroy. This information is solely for the use of the individual or entity that is the intended recipient. If you are not the designated recipient, or the person responsible for delivering the communication to its intended recipient, please be aware that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this electronic transmission in error, please notify by telephone (816-421-3355), collect or by electronic mail (solutions@xxxxxxxxxx ) and promptly destroy the original transmission. Thank you for your assistance.