My company users unable to send emails to some of the domains.
Please I need help for the following error:
Delivery has failed to these recipients or distribution lists:
tamer@optima.tc
An error occurred while trying to deliver this message to the recipient's e-mail address. Microsoft Exchange will not try to redeliver this message for you. Please try resending this message, or provide the following diagnostic text to your system administrator.
The following organization rejected your message: natrohost.com.
_____
Sent by Microsoft Exchange Server 2007
Diagnostic information for administrators:
Generating server: eccmail.etesal.com.sa
tamer@optima.tc
natrohost.com #554 This server requires PTR for unauthenticated connections. ##
Original message headers:
Received: from eccmail.etesal.com.sa ([192.168.0.7]) by eccmail.etesal.com.sa
([192.168.0.7]) with mapi; Wed, 13 Jul 2011 15:18:38 +0300
From: "Asrar M. Khan" <asrar@etesal.com.sa>
To: "tamer@optima.tc" <tamer@optima.tc>
CC: Mohammad Shahadeh <mohammad@etesal.com.sa>
Disposition-Notification-To: "Asrar M. Khan" <asrar@etesal.com.sa>
Return-Receipt-To: <asrar@etesal.com.sa>
Date: Wed, 13 Jul 2011 15:18:35 +0300
Subject: Questions re Installation
Thread-Topic: Questions re Installation
Thread-Index: AcxBVvzLwX8DV3nNRpWzzZCUV5Vd9Q==
Message-ID: <AED830FC6D203C478659B9817CFD0ADB01657EBBAE74@eccmail.etesal.com.sa>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
acceptlanguage: en-US
Content-Type: multipart/related;
boundary="_004_AED830FC6D203C478659B9817CFD0ADB01657EBBAE74eccmailetes_";
type="multipart/alternative"
MIME-Version: 1.0
