Are the IP settings for the two servers the same? Specifically, do the DNS settings match for each server? Any error/warning messages in the application and system event log of the w2k3 machine? If you stop the outbound mail queues on the w2k3 in which queue do the messages intended for the w2k server end up? -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Avien Darbendy Sent: 22 August 2006 09:33 To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: Non delivery message from exchange 2003 to exchange 2000 Both servers are installed on same domain en on same exchange administative group. Certainly I can send message from exchange 2000 to exchange 2003 but not oppositely. Thanks, Avien -----Oorspronkelijk bericht----- Van: Andrew Wood [mailto:andrew.wood@xxxxxxxxxxxxxxxx] Verzonden: maandag 21 augustus 2006 16:59 Aan: thin@xxxxxxxxxxxxx Onderwerp: [THIN] Re: Non delivery message from exchange 2003 to exchange 2000 Are the two servers in the same Exchange group - or different groups? Do they have the same SMTP domain or different domains. -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Avien Darbendy Sent: 21 August 2006 15:36 To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: Non delivery message from exchange 2003 to exchange 2000 I don't' understand your question exactly, I have exchange 2000 and exchange 2003; sending mail form exchange 2000 to 2003 is no problem. And I can configure exchange 2003 using system manager on exchange 2000. This change is applied to exchange 2003. Avien -----Oorspronkelijk bericht----- Van: Philip Walley [mailto:mythinlist@xxxxxxxxx] Verzonden: maandag 21 augustus 2006 16:14 Aan: thin@xxxxxxxxxxxxx Onderwerp: [THIN] Re: Non delivery message from exchange 2003 to exchange 2000 it's been a while since i played with exchange but to answer your specific question, no, you don't have to have DNS _on_ exchange but you do have to have DNS somewhere. Have you checked your interoperability mode? Avien Darbendy wrote: > > Hello, > > > > When I send message from mailbox on exchange 2003 to mailbox on > exchange 2000, the message is undeliverable. Oppositely are delivered > successfully from Exchange 2000 to Exchange 2003. > > I can send and receive message between Exchange 2003 and external address. > > For more information I have yet installed exchange 2003 on windows > 2000 domain. > > Is it required that DNS be installed on Exchange 2003 or not? > > > > Thanks for any reaction. > > Avien > > > > > > > > > > ------------------------------------------------------------------------ > Alle berichten en de daarbij meegestuurde documenten of andere vormen > van bestanden worden onderzocht op virussen. Dit geldt NIET voor de > bijgevoegde bestanden die door middel van een wachtwoord beveiligd > zijn. (meezhn, vtvzhn mail domein). ************************************************ For Archives, RSS, to Unsubscribe, Subscribe or set Digest or Vacation mode use the below link: //www.freelists.org/list/thin ************************************************ Alle berichten en de daarbij meegestuurde documenten of andere vormen van bestanden worden onderzocht op virussen. Dit geldt NIET voor de bijgevoegde bestanden die door middel van een wachtwoord beveiligd zijn. (meezhn, vtvzhn mail domein). ************************************************ For Archives, RSS, to Unsubscribe, Subscribe or set Digest or Vacation mode use the below link: //www.freelists.org/list/thin ************************************************ ************************************************ For Archives, RSS, to Unsubscribe, Subscribe or set Digest or Vacation mode use the below link: //www.freelists.org/list/thin ************************************************ Alle berichten en de daarbij meegestuurde documenten of andere vormen van bestanden worden onderzocht op virussen. Dit geldt NIET voor de bijgevoegde bestanden die door middel van een wachtwoord beveiligd zijn. (meezhn, vtvzhn mail domein). ************************************************ For Archives, RSS, to Unsubscribe, Subscribe or set Digest or Vacation mode use the below link: //www.freelists.org/list/thin ************************************************ ************************************************ For Archives, RSS, to Unsubscribe, Subscribe or set Digest or Vacation mode use the below link: //www.freelists.org/list/thin ************************************************