For some reason, when an Exchange 5.5 user creates a personal DL in his/her Outlook contacts and sends the message, they get an NDR like this: From: System Administrator Sent: Wednesday, January 28, 2004 3:04 PM To: c+AD0-US+ADs-a+AD0- +ADs-p+AD0-DOMAIN+ADs-o+AD0-SWSGS+ADs-dda:SMTP+AD0-user+AEA-worldnet.att.net+ADsAOw- Subject: Undeliverable: Your message did not reach some or all of the intended recipients. Subject: Sent: 1/28/2004 3:04 PM The following recipient(s) could not be reached: c=US;a= ;p=DOMAIN;o=SWSGS;dda:SMTP=user@xxxxxxxxxxxxxxxx; on 1/28/2004 3:04 PM Delivery of the message required a bilateral agreement where not such agreement exists The MTS-ID of the original message is: c=US;a= ;p=Domain;l=UCNT4EXCH-040128230353Z-307339 But when they send to the user individually, the message goes through fine. What could be causing this? Devon Harding Windows Systems Engineer Southern Wine & Spirits - GSD 954-602-2469 ----------------------------------------- __________________________________ This message and any attachments are solely for the intended recipient and may contain confidential or privileged information. If you are not the intended recipient, any disclosure, copying, use or distribution of the information included in the message and any attachments is prohibited. If you have received this communication in error, please notify us by reply e-mail and immediately and permanently delete this message and any attachments. Thank You.