Try this link for NDR's http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q284204 <http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q284204&ID=KB;EN-US ;Q284204> &ID=KB;EN-US;Q284204& * Numerical Code: 5.7.1 Possible Cause: * General access denied, sender access denied - the sender of the message does not have the privileges necessary to complete delivery. * You are trying to relay your mail via another SMTP server and it does not permit you to relay. * The recipient might have mailbox delivery restrictions enabled. For example, a recipient's mailbox delivery restriction was sent to receive from a Distribution List only and non-member's email will be rejected with this error. Troubleshooting: Check system privileges and attributes for the contact and retry the message. Also make sure you are running Exchange 2000 Service Pack 1 or later for other potential known issues. Mark Shevill IMG Messaging Deputy Team Leader Shell Information Technology International Limited Rowlandsway, Wythenshawe, Manchester M22 5SB, United Kingdom Tel: +44 161 935 7152 Email: Mark.M.Shevill@xxxxxxxxxxxx Internet: http://www.shell.com <http://www.shell.com/> -----Original Message----- From: Matthew Martin [mailto:mmartin@xxxxxxxxxxxxxxx] Sent: 30 August 2002 01:28 To: [ExchangeList] Subject: [exchangelist] RE: Email issue http://www.MSExchange.org/ Hello Listmembers, The below error message was generated after sending the original message to an external Recipient. Your message did not reach some or all of the intended recipients. Subject: Meeting follow-up Sent: 29/08/2002 10:59 AM The following recipient(s) could not be reached: ' (x@xxxxxxxx)' on 29/08/2002 10:59 AM You do not have permission to send to this recipient. For assistance, contact your system administrator. <server1.x.au #5.7.1> Would someone be able to explain why this may be? Any help would be appreciated. Thanks in advance. Matt. ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: Mark.Shevill@xxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')