troubleshooting Question

Delivery has failed to these recipients or distribution lists

Avatar of KhaledS
KhaledS asked on
ExchangeEmail Protocols
2 Comments1 Solution1989 ViewsLast Modified:
we are getting Delivery has failed to these recipients or distribution lists
like this :

Delivery has failed to these recipients or distribution lists:
Your message wasn't delivered because of security policies. Microsoft Exchange will not try to redeliver this message for you. Please provide the following diagnostic text to your system administrator.

Diagnostic information for administrators:

Generating server:
#< #5.7.1 smtp;550 5.7.1 RESOLVER.RST.AuthRequired; authentication required> #SMTP#

Original message headers:

Received: from ( by (
 with Microsoft SMTP Server id 8.1.336.0; Tue, 27 Oct 2009 13:56:51 +0300
X-IronPort-AV: E=Sophos;i="4.44,632,1249246800";
Received: from ([])  by with ESMTP;
 27 Oct 2009 14:04:28 +0300
Received: (qmail 3948 invoked by uid 89); 27 Oct 2009 14:04:27 +0300
Received: (qmail 3942 invoked from network); 27 Oct 2009 14:04:27 +0300
Received: from (  by with SMTP; 27
 Oct 2009 14:04:27 +0300
X-IronPort-AV: E=Sophos;i="4.44,632,1249246800";
Received: from unknown (HELO ([])  by with ESMTP; 27 Oct 2009 13:56:12 +0300
Received: from ( by
 ( with Microsoft SMTP Server (TLS) id 8.1.340.0; Tue, 27 Oct
 2009 13:56:58 +0300
Received: from ([]) by
 ([]) with mapi; Tue, 27 Oct 2009 13:55:15 +0300
From: Khaled Sallal <>
To: "" <>
CC: Joel Tamayo <>
Date: Tue, 27 Oct 2009 13:55:14 +0300
Subject: FW: PACI Matters
Thread-Topic: PACI Matters
Thread-Index: AcpW8OfDRyp6kQ+/RNq3H77f5P08wAAAvtew
Message-ID: <>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach: yes
acceptlanguage: en-US
Content-Type: multipart/mixed;
MIME-Version: 1.0


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