My email is not delivered to a post list RRS feed

  • Question

  • When I send email I get this in return - how do i fix it?

    Delivery has failed to these recipients or groups:

    A problem occurred during the delivery of this message to this e-mail address.

    Try sending this message again. if the problem continues, please contact your helpdesk.

    The following organization rejected your message:

    Diagnostic information for administrators:

    Generating server: #< #5.0.0 smtp; 571 571 Sender is not allowed to email this distribution list: #smtp#

    Original message headers:

    Return-Path <> 

    Received: by (postfix, from userid 5001) id 4AA3456AE98; Tue, 3 Sep 2013 11:21:20 +0000 (GMT)

    Received: from ( [] ) by

    (Postfix) with ESMTPS id 1F88456A316  for <>: tue, 3 sep 2013 11:21:16 +0000 (GMT)

    Received: from ([fe80::1116:6b06:9e1b:58e8]) by ([fe80:28a8:c40f:d12e:3314%11])

    with mapi id 14.01.0289.001; Tue, 3 sep 2013 11:21:16 +0000

    From: =?iso-8859-1?Q?]=F3n_Ingvar_Valdimarsson?=


    To: Gunnar Ingi Kristinsson <>

    =?iso-8859-1?B?)0d18GrzbiDNdmFyc3Nvbic=?= <>

    =?iso-8859-1?Q?Vi=F0ar_Gu=F0mundsson?= <>.


    Subject: RE: fsnet

    Thread-Topic: fsnet

    Tread-Index: Ac6o1xCSw18Tn1rBQvyTzTFYRQ8C4AAAEs1gAAAOLSAAAakUYA==

    Date: Tue, 3 Sep 2013 11:21:15 +0000

    Message-ID <78A43D6670DFE47B464845AD41C09A9197C05AB@ex-mbx.MKDOM.IS>





    In-Reply-to: <>

    Accept- Language: is-IS, en-US

    Contend-Language: en-US



    x-originating-ip: [

    Content-Type: multipart/alternative


    MIME-Version: 1.0

    Can anyone help me!!!

    Tuesday, October 15, 2013 12:51 PM

All replies

  • Hello!

    In Mail Flow Settings tab open Message Delivery Restrictions and uncheck "Requared that all senders are authenticated "

    Tuesday, October 15, 2013 1:13 PM
  • This is already unchecked so this is not the problem
    Monday, October 21, 2013 3:53 PM
  • Could you tell as a little bit about your Exchange environment?

    Have you checked permissions for Default Receive Connector?

    I think something wrong is on your Default Receive Connector, cos I'm not able to send a test message to, I have got the same error " Sender is not allowed to email....."

    Do you use any AntiSpam Solution? 

    Monday, October 21, 2013 4:29 PM
  • Hello again!

    Is there any news?

    Tuesday, October 29, 2013 5:57 AM