Describe a little more your setup. Also if every sender from *.com experiencing this ? Have you checked out : http://support.microsoft.com/?kbid=895857 <http://support.microsoft.com/?kbid=895857&SD=tech> &SD=tech /Gill _____ From: Jobs Zhao [mailto:Jobsz@xxxxxxxxxxxxxxx] Sent: Saturday, January 21, 2006 6:05 PM To: [ExchangeList] Subject: [exchangelist] Very strange returned messages http://www.MSExchange.org/ Dear all, Our HO is in Sweden and their mail server is @tradex-asia.se, we have a distribution group travelreport@xxxxxxxxxxxxxx In this group there are some members such as s1@xxxxxxxxxxxxxxx;s2@xxxxxxxxxxxxxxxx All emails sent is through internet, not VPN or LAN. I met the case as following. When someone using our mail such as me jobsz@xxxxxxxxxxxxxxx, send email to travelreport@xxxxxxxxxxxxxx, we always Get the following returned messages. -----Original Message----- From: system administrator [mailto:postmaster@xxxxxxxxxxxxxxx] Sent: 2006,01,20 17:22 To: Jobsz@xxxxxxxxxxxxxxx Subject: undeliverable Your message To: travelreport@xxxxxxxxxxxxxx Subject: Sent: Fri, 20 Jan 2006 17:20:14 +0800 Did not reach the following recipient(s): S1 on Fri, 20 Jan 2006 17:20:11 +0800 The recipients has some communication problems with SMTP, please contact system administrator S2 on Fri, 20 Jan 2006 17:20:11 +0800 The recipients has some communication problems with SMTP, please contact system administrator Also I got the following details as following. Reporting-MTA: dens; mail.tradex-asia.com Final-Recipient: RFC822; s1@xxxxxxxxxxxxxxx Action: failed Status: 5.5.0 X-Display-Name: s1 Final-Recipient: RFC822; s2@xxxxxxxxxxxxxxx Action: failed Status: 5.5.0 X-Display-Name: s2 I'm strange that, I sent to the group @tradex-asia.se, first the email is to HO's, and then HO's sent Emails to @tradex-asia.com, why the returned message is from @tradex-asia.com not @tradex-asia.se? I'm very confused. Anyone could help me? Thanks a lot BR/Jobsz .com To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to info@xxxxxxxxxxxxxx ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: ssgill@xxxxxxxxxxxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to info@xxxxxxxxxxxxxx