Your the next contestant on "Who's been BLACKLISTED" :-) If saad.com.sa is your domain, then I wouldn't allow you to send mail here, but for Hotmail to blacklist someone is pretty bad. Take a look here and fix your DNS setup to start with and then continue. http://www.dnsreport.com/tools/dnsreport.ch?domain=saad.com.sa George Taylor Systems Programmer Regional Health Inc. _____ From: Jawad, Ashraf [mailto:JawadAI@xxxxxxxxxxx] Sent: Tuesday, February 27, 2007 9:09 AM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] You don't have permission Hi all, We started to receive an error message from our exchange 2000 server saying the following: “Your message did not reach some or all of the intended recipients. Subject: 5:18 Sent: 27/02/2007 05:19 م The following recipient(s) cannot be reached: walid@xxxxxxxxxxx on 27/02/2007 05:19 م You do not have permission to send to this recipient. For assistance, contact your system administrator. <ourdomain.com #5.7.1 smtp;550 5.7.1 Unable to relay for walid@xxxxxxxxxxx>” If we restart the servers it work for period of time and return display the same error. Finally we used a smart host to relay the message, one of the servers forwarded its messages to the smart host while the other server return the same error again. Please help. Ashraf _____ This E-Mail is confidential. It may also be legally privileged. If you are not the addressee you may not copy, forward, disclose or use any part of it. If you have received this message in error, please delete it and all copies from your system and notify the sender immediately by return E-mail. Internet communications cannot be guaranteed to be timely secure, error or virus-free. The sender does not accept liability for any errors or omissions. ***Note: The information contained in this message, including any attachments, may be privileged, confidential, and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the Sender immediately by a "reply to sender only" message and destroy all electronic or paper copies of the communication, including any attachments.