Your server is reporting the error, not generating it.. Turn up logging on your IMS to see exactly what is being sent or try sending a message to the ISP's mail server from the Exchange server using a null sender.
Chris -- Chris Scharff Senior Sales Engineer MessageOne If you can't measure, you can't manage! > -----Original Message----- > From: Nizar El-Assaad [mailto:[EMAIL PROTECTED]] > Sent: Friday, November 09, 2001 11:01 AM > To: Exchange Discussions > Subject: RE: NDR and Relaying Problems > > > Thank you Chris for your reply, but it seems to me that the > error message is originating from my server and not from the > ISP's relay server, or is it not? > > As far as using DNS for outbound mail, unfortunately this > configuration is not working properly when using internet > mail over a dial-up connection, as a lot of times, messages > cannot be delivered because the recipient domain name host > cannot be resolved. I have noticed this behavior on all > servers where Exchange IMS uses dial-up to deliver outbound mail. > > Best Regards > Nizar El-Assaad > > > -----Original Message----- > From: Chris Scharff [mailto:[EMAIL PROTECTED]] > Sent: Friday, November 09, 2001 4:15 PM > To: Exchange Discussions > Subject: RE: NDR and Relaying Problems > > > Call your ISP and tell them they are non-compliant with the > relevant RFCs. Or configure your server to deliver mail using DNS. > > Chris > -- > Chris Scharff > Senior Sales Engineer > MessageOne > If you can't measure, you can't manage! > > > > -----Original Message----- > > From: Nizar El-Assaad [mailto:[EMAIL PROTECTED]] > > Sent: Friday, November 09, 2001 12:59 AM > > To: Exchange Discussions > > Subject: NDR and Relaying Problems > > > > > > Hello > > > > Ever since I installed Exchange 5.5 sp4, my server can longer send > > NDRs. Whenever a message reaches the server with a bad address, and > > the server tries to send back an NDR, I get the following error > > message: "The following recipients did not receive the > attached mail. > > Reasons are listed with each > > recipient: <originator> originator MSEXCH:IMS:ANZIMA > > S.A.L.:ANZIMA:YASMINA 3550 (000B09AA) 550 relaying mail to > > [originator domain] is not allowed." > > > > My server is Yasmina, and my organization/site is Anzima. > > > > For outbound mail, I set Exchange to forward all messages to my ISP > > SMTP server, because if I use DNS, a lot of messages fail to be > > delivered (I have a dial-up connection). > > > > Thank you for your help. > > > > Best Regards > > Nizar El-Assaad > > > > _________________________________________________________________ > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > Archives: http://www.swynk.com/sitesearch/search.asp > > To unsubscribe: mailto:[EMAIL PROTECTED] > > Exchange List admin: [EMAIL PROTECTED] > > > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Archives: http://www.swynk.com/sitesearch/search.asp > To unsubscribe: mailto:[EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Archives: http://www.swynk.com/sitesearch/search.asp > To unsubscribe: mailto:[EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]

