I have exchange 2003 -SP2 on my organisation. When any one sends email from outside, it comes to my mail relay gateway server (solaris 8 runs with sendmail) and my mail relay gateway hand overs to my local email forwarder server (solaris 8 - runs with sendmail.) and my local email forwarder server will delivers to my exchange server which has alluser email boxes. Actuall my local email forwarder has some hardware issue, so i configured one more new hardware server with same funtions and configuration . I repalced the new hardware with old hardware.
During my test, when i sent email from my hotmail account to my work email address, it is coming to my mail realy server and mail realy server hadn overs to local email forwarder server. And my local email forwarder server delivers to my exchange server. After mails coming to my exchange server, it is sitting there in the queue. It is not delivering to my local email box.
But my outbound emails are working fine.For outbound my exhcnage server directly hand overs the email to my relay server through SMTP connector. After i put back my old mail forwarder server, my inbound emails are working fine. After some time all the mail in queue gave me NDR . Here is the error message,
Your message did not reach some or all of the intended recipients.
Subject: Output from "cron" command
Sent: 5/2/2009 7:37 AM
The following recipient(s) cannot be reached:
firstname.lastname@example.org on 5/2/2009 9:46 AM
A configuration error in the e-mail system caused the message to bounce between two servers or to be forwarded between two recipients. Contact your administrator.
I dont't know where i was making mistake. Is there any one faced this kind of problem. Please let me know what should i do to fix this issue.