Hi, I have exchange 2003 server. There are few distribution lists, all of them are working fine. But when I try to send mail to a particular DL named as sales, mail gets bounced back after one or two days of mail sent. Error message given in mail is as follows:- Your message did not reach some or all of the intended recipients. Subject: test mail..... Sent: 5/24/2006 12:01 PM The following recipient(s) could not be reached: SALES on 5/24/2006 12:01 PM Could not deliver the message in the time limit specified. Please retry or contact your administrator.The MTS-ID of the original message is:c=US;a= ;p=mo;l=EXCHSRVR2003-060524063122Z-21 MSEXCH:MSExchangeMTA:moduleone:EXCHSRVR2003 ps. check out our latest product: <file:///C:\Documents%20and%20Settings\amit\Application%20Data\Microsoft\Sig natures\www.DriveInside.com> www.DriveInside.com - India's No. 1 Auto Website -------- Amit Kapoor Network Engineer Module One India Ltd. Paharpur Software Technology Incubator Park A-88, Okhla Phase II, New Delhi 110020, India Tel: +91-(0)11-41859200 ext. 204 | Fax: +91-(0)11-41859220 E-mail: <mailto:amit@xxxxxxxxxxxxx> amit@xxxxxxxxxxxxx | Web: <http://www.moduleone.com/> www.moduleone.com ==== c r e a t i v e i n t e r n e t s o l u t i o n s ==== Module One, one of India's leading Interactive agencies, uses a combination of creative, marketing and technology skills to assist clients in successfully using the Internet for their marketing initiatives.