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Exchange 2010 - #550 5.7.1 Unable to relay#

Posted on 2013-05-15
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Last Modified: 2013-05-22
Hello,

When I try to send mail out, I get the following message:

Delivery has failed to these recipients or groups:

'user@comcast.net' (user@comcast.net) (user@comcast.net)
Your message wasn't delivered due to a permission or security issue. It may have been rejected by a moderator, the address may only accept e-mail from certain senders, or another restriction may be preventing delivery.


The following organization rejected your message: SERVER0.Domain.local.

Diagnostic information for administrators:

Generating server: SERVER1.Domain.local

user@comcast.net
SERVER0.Domain.local #550 5.7.1 Unable to relay ##

Original message headers:

Received: from SERVER0.Domain.local ([192.168.217.10]) by
 SERVER1.Domain.local ([192.168.217.11]) with mapi id 14.02.0342.003;
 Wed, 15 May 2013 21:43:13 -0400
From: "Donald S. Doyle" <dsdoyle@domain.com>
To: "'user@comcast.net' (user@comcast.net)" <user@comcast.net>
Subject: TEST @ 2143
Thread-Topic: TEST @ 2143
Thread-Index: Ac5R1rhdfK/ch7rsS6KjygWUhCt+9g==
Date: Thu, 16 May 2013 01:43:11 +0000
Message-ID: <E3336DF928658B45AD4B60C756612AD533E204@SERVER0>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [68.58.136.101]
Content-Type: multipart/alternative;
      boundary="_000_E3336DF928658B45AD4B60C756612AD533E204SERVER0_"
MIME-Version: 1.0

I am able to successfully send mail to recipients at domain.com.

I have a send connector "*" with Smart Host Authentication set to None.

Thank you for your time,

Don
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Comment
Question by:GEMCC
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4 Comments
 
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Expert Comment

by:gkousikan
Comment Utility
1. Please check receive connector Properties --> permission group-->  Select Anonymous.  

If required you can create new recieve connetor and custom the settings ----> Remote Network Settings --> Enter the IP address of the server you want to allow to relay through the Exchange server.

2.  Please check comcast.net domain added into accepted domain.
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Expert Comment

by:Manpreet SIngh Khatra
Comment Utility
Your message wasn't delivered due to a permission or security issue. It may have been rejected by a moderator, the address may only accept e-mail from certain senders, or another restriction may be preventing delivery

Is there some Moderation on Email to External sources if so its being rejected by someone as Moderation.

I assume Comcast.net isnt an email in your Domain nor hosted by you ?
Look either if your want you can use DNS or if Smarthost you have to mention the IP of the second hop server in order for mail-flow to run smoothly.

- Rancy
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Accepted Solution

by:
GEMCC earned 0 total points
Comment Utility
Fixed!  It wasn't a permission issue per se.  The issue was that the send connector was set to custom.  Change it to Internet, now it works!
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Author Closing Comment

by:GEMCC
Comment Utility
Because it resolved the issue.
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