This is the error i will get for surinder@linux as in TO: This Message was undeliverable due to the following reason: Your message was not delivered because the destination computer was not found. Carefully check that it was spelled correctly and try sending it again if there were any mistakes. It is also possible that a network problem caused this situation, so if you are sure the address is correct you might want to try to send it again. If the problem continues, contact your system administrator. Host linux.bflsoftware.com not found The following recipients did not receive this message: <surinder@linux.bflsoftware.com> Please reply to Postmaster@megha.bflsoftware.com if you feel this message to be in error. Reporting-MTA: dns; megha.bflsoftware.com Received-From-MTA: smtp; surinder.bflsoftware.com (164.164.58.146) Arrival-Date: Thu, 10 Aug 2000 16:37:03 +0530 Final-Recipient: rfc822;surinder@linux.bflsoftware.com Diagnostic-Code: smtp; 512 SMTP-Deliver:InvalidHost Action: failed Status: 5.1.2 Remote-MTA: dns; linux.bflsoftware.com Last-Attempt-Date: Thu, 10 Aug 2000 16:37:13 +0530 - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.rutgers.edu