Is there a smart host involved? Or an SMTP Connector? I had this error, it turned out I was attempting to send undeliverable mail (like what's coming out of your New server) out to a smart host, which routed it right back into the new server. Where does internet mail go first? Probably the New server, but not to the Old. -----Original Message----- From: Jeffrey Robillard [mailto:jrobill@xxxxxxxxxxxxx] Sent: Monday, April 14, 2003 1:23 PM To: [ExchangeList] Subject: [exchangelist] 2nd posting on this... little more info http://www.MSExchange.org/ two exchange servers, 1 new. I can send and receive to/from the internet from a user with a mailbox on the new system. I can send mail from a mailbox on the old ex2k mail server to a user with a mailbox on the new ex2k mail server. I can't send mail from the new ex2k mail server to mailboxes on the old ex2k mail server. error is "A configuration error in the e-mail system caused the message to bounce between two servers or to be forwarded to two recipients." any ideas... documentation and help you there is garbage for multiple exchange servers in the same site. ------------------------------------------------------ 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 ------------------------------------------------------ ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: dstelley@xxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') Confidential: The information contained in this message may be legally privileged and confidential information intended only for the use of the individual or entity named above. If the reader of this message is not the intended recipient, or the employee or agent responsible to deliver it to the intended recipient, you are hereby notified that any release, dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error please notify the author immediately by replying to this message and deleting the original message. Thank you.