Hi all,

I am trying to setup a client (on separate network) to send mail via our local SMTP server. I do have responce when I do

#telnet mailhost 25

therefore, I can establish connection between the 2.

however, when I try to send out testing mail, the following mail is returned in my client server mail box

From MAILER-DAEMON Tue Feb 21 11:27:47 2006
Date: Tue, 21 Feb 2006 11:27:47 +0900 (KST)
From: Mail Delivery Subsystem <MAILER-DAEMON>
Message-Id: <200602210227.k1L2Rl514267@clientmachine.domain.com>
To: my_username
Subject: Returned mail: see transcript for details
Content-Length: 1254

This is a MIME-encapsulated message

--k1L2Rl514267.1140488867/clientmachine.domain.com

The original message was received at Tue, 21 Feb 2006 11:27:47 +0900 (KST)
from root@localhost

----- The following addresses had permanent fatal errors -----
my_username@domain.com

----- Transcript of session follows -----
550 5.1.2 my_username@domain.com... Host unknown (Name server: domain.com: host not found)

--k1L2Rl514267.1140488867/clientmachine.domain.com
Content-Type: message/delivery-status

Reporting-MTA: dns; clientmachine.domain.com
Arrival-Date: Tue, 21 Feb 2006 11:27:47 +0900 (KST)

Final-Recipient: RFC822; my_username@domain.com
Action: failed
Status: 5.1.2
Remote-MTA: DNS; fimat.com
Last-Attempt-Date: Tue, 21 Feb 2006 11:27:47 +0900 (KST)

--k1L2Rl514267.1140488867/clientmachine.domain.com
Content-Type: message/rfc822

Return-Path: <my_username>
Received: from mailhost.domain.com (root@localhost)
by clientmachine.domain.com (8.11.7p1+Sun/8.11.7) id k1L2Rl614265
for my_username@domain.com; Tue, 21 Feb 2006 11:27:47 +0900 (KST)
Date: Tue, 21 Feb 2006 11:27:47 +0900 (KST)
From: my_usrname
Message-Id: <200602210227.k1L2Rl614265@clientmachine.domain.com >
Content-Type: text
MIME-Version: 1.0

testing2


--k1L2Rl514267.1140488867/clientmachine.domain.com --

any idea? It seems like I have to input an entry of something to help the system to resolve the name of my domain name. but what is it? is it only the www.domain.com name? or some other entry? Please advise. Thanks

Any help guys @_@?? Thanks in advance