Dear Pak Syafril,

Hari ini user-user kami ada terima mail bounch back seperti dibawah, padahal 
email address tersebut masih valid, user kami hanya reply email dari sender 
yang bounch back tersebut.

1. Apakah mail tersebut memang tidak sampai?
2. Apakah penyebab bounch back?
3. Bagaimana cara mengetasinya?

Atas bantuannya saya ucapkan Terima Kasih.

1. 


Hi. This is the qmail-send program at
mail.dnet.net.id. 
I'm afraid I wasn't able to deliver your message
to the following addresses. 
This is a permanent error; I've given up. Sorry
it didn't work out. 
<[email protected]>: 
Sorry, I couldn't find any host named
yamaha-motor.co.id. (#5.1.2) 
--- Below this line is a copy of the message. 
Return-Path: <[email protected]> 
Received: (qmail 14440 invoked from network); 7
Sep 2011 11:15:46 +0700 
Received: from unknown (HELO
webmail.nnr-prima.com) (202.148.29.251) 
  by mail.dnet.net.id with SMTP; 7 Sep 2011
11:15:46 +0700 
X-MDAV-Processed: webmail.nnr-prima.com, Wed, 07
Sep 2011 11:15:41 +0700 
Received: from falah3f74f167a5dd by
webmail.nnr-prima.com (MDaemon PRO v10.1.1) 
        with
ESMTP id md50001149628.msg 
        for
<[email protected]>;
Wed, 07 Sep 2011 11:15:40 +0700 
X-Spam-Processed: webmail.nnr-prima.com, Wed, 07
Sep 2011 11:15:40 +0700 
        (not
processed: message from trusted or authenticated source) 



2.

This is the mail delivery agent at messagelabs.com.
I was not able to deliver your message to the following
addresses.
 
<[email protected]>:
Sorry, I couldn't find any host named mail.ykk.co.id.
(#5.1.2)
 
--- Below this line is a copy of the message.
 
Return-Path: <[email protected]>
X-Env-Sender: [email protected]
X-Msg-Ref:
server-13.tower-95.messagelabs.com!1315361309!18078673!1
X-Originating-IP: [202.148.1.19]
X-SpamReason: No, hits=1.1 required=7.0
tests=HTML_MESSAGE,SUBJ_ALL_CAPS,
  UNPARSEABLE_RELAY
X-StarScan-Version: 6.3.6; banners=-,-,ykk.co.id
X-VirusChecked: Checked
Received: (qmail 6080 invoked from network); 7 Sep 2011
02:08:30 -0000
Received: from mail.dnet.net.id (HELO mail.dnet.net.id)
(202.148.1.19)
  by
server-13.tower-95.messagelabs.com with SMTP; 7 Sep 2011 02:08:30 -0000
Received: (qmail 17223 invoked from network); 7 Sep 2011
09:07:59 +0700
Received: from unknown (HELO webmail.nnr-prima.com)
(202.148.29.250)
  by
mail.dnet.net.id with SMTP; 7 Sep 2011 09:07:59 +0700
X-MDAV-Processed: webmail.nnr-prima.com, Wed, 07 Sep 2011
09:07:54 +0700
Received: from ae267fe24b93a8 by webmail.nnr-prima.com
(MDaemon PRO v10.1.1)
                with
ESMTP id md50001149235.msg;
                Wed,
07 Sep 2011 09:07:53 +0700
X-Spam-Processed: webmail.nnr-prima.com, Wed, 07 Sep 2011
09:07:53 +0700
                (not
processed: message from trusted or authenticated source)
--[MDaemon-L]------------------------------------------------
Milis ini untuk Diskusi antar pengguna MDaemon Mail Server.

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