That was my first thought but the message indicates that the problem lies on the Exchange server when it speaks of having multiple virtual SMTP servers. It could, I suppose, be confused about the origin of the problem. Both are configured to port 25. Since the SMPT connector on the Exchange box is supposed to be outbound only what would be the harm in changing it to a different port? What port is recommended? Byron Kendrick InformationTechnology 2067 -----Original Message----- From: Tiago de Aviz [mailto:Tiago@xxxxxxxxxxxxxxx] Sent: Wednesday, March 02, 2005 12:29 PM To: [ExchangeList] Subject: [exchangelist] RES: Looping messages http://www.MSExchange.org/ Maybe the sun box is routing the messages back to the exchange box? Tiago de Aviz SoftSell - Curitiba (41) 340-2363 www.softsell.com.br Esta mensagem, incluindo seus anexos, tem caráter confidencial e seu conteúdo é restrito ao destinatário da mensagem. Caso você tenha recebido esta mensagem por engano, queira por favor retorná-la ao destinatário e apagá-la de seus arquivos. Qualquer uso não autorizado, replicação ou disseminação desta mensagem ou parte dela é expressamente proibido. A SoftSell não é responsável pelo conteúdo ou a veracidade desta informação. -----Mensagem original----- De: Byron Kendrick [mailto:bkendrick@xxxxxxxxxxxxxxxxx] Enviada em: quarta-feira, 2 de março de 2005 15:29 Para: [ExchangeList] Assunto: [exchangelist] Looping messages http://www.MSExchange.org/ I am getting the following error messages. Can someone help me? Let me know what other information you need. We do have a SMTP connector configured on the server that points to a Sendmail server (Sun Solaris) but it looks like this is an internal problem. How can I change the port on the virtual SMTP server and which one should be changed? Type: Error Source: MSExchangeTransport Event ID: 3017 Event Time: 3/2/2005 9:23:12 AM User: n/a Computer: "Exchange Server" Description: A non-delivery report with a status code of 5.3.5 was generated for recipient rfc822;"user"@phoenix.austincollege.edu (Message-ID <200503020922.AA32375048@"popserver".austincollege.edu>). Causes: A looping condition was detected. (The server is configured to route mail back to itself). If you have multiple SMTP Virtual Servers configured on your Exchange server, make sure they are defined by a unique incoming port and that the outgoing SMTP port configuration is valid to avoid looping between local virtual servers. Solution: Check the configuration of the virtual serverÆs connectors for loops and ensure each virtual server is defined by a unique incoming port. ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: World of Windows Networking: http://www.windowsnetworking.com Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSEXchange.org Discussion List as: tiago@xxxxxxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to listadmin@xxxxxxxxxxxxxx ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: World of Windows Networking: http://www.windowsnetworking.com Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSEXchange.org Discussion List as: bkendrick@xxxxxxxxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to listadmin@xxxxxxxxxxxxxx