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#560 5.6.0 Prohibited Message Content

Posted on 2011-09-26
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Last Modified: 2015-06-23
My boss is getting errors when sending to one person outside our network. Example, two emails went out to external contacts and only one got a NDR. We have exchange 2010, not sure what the other guys are using. Doing a search for this error comes up with

This is the NDR
From: Microsoft Outlook
Sent: Monday, September 26, 2011 4:46 PM
To: My Boss
Subject: Undeliverable: FW:
mail.externalcontact.org rejected your message to the following e-mail addresses:

'user@externalcontact.org' (user@externalcontact.org) <mailto:user@externalcontact.org>


mail.externalcontact.org gave this error:
Prohibited Message Content (#3.41)


The e-mail system had a problem processing this message. It won't try to deliver this message again.










Diagnostic information for administrators:

Generating server: mail.mymailserver.local

user@externalcontact.org
mail.externalcontact.org #560 5.6.0 Prohibited Message Content (#3.41) ##

Original message headers:

Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
MIME-Version: 1.0
--

I took out the sensitive details. I am assuming it is the external contact based on this line here

mail.externalcontact.org gave this error:
Prohibited Message Content (#3.41)

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Question by:ACBnewguy
6 Comments
 
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Expert Comment

by:5g6tdcv4
ID: 36602514
So there server is saying your message has something in it, that it has been configured to not accept

Can you send an email to that server using telnet from within your organization?
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Expert Comment

by:Papertrip
ID: 36602522
If the prohibited content in that email is obvious, then remove it and test again.  In fact just test with a simple mail with a few words in it, no attachments, no hyperlinks, etc.

If they still bounce, then the only thing you can do is contact the receiver and have them check their logs for more specific reject/bounce reasons.
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Author Comment

by:ACBnewguy
ID: 36677671
sounds to me like their server is blocking as per the bold text, I can't find this error in MS exchange so I would assume this is probably a firewall or some type of hosted mail service. FTgate comes up on searching google.
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Expert Comment

by:Papertrip
ID: 37211811
Hi, is this still an issue?
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Accepted Solution

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ACBnewguy earned 0 total points
ID: 37293986
so sorry for the delay the error was on the receiving end. Their firewall was blocking it. I can't figure out how to close the question.
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Expert Comment

by:Delphineous Silverwing
ID: 40845484
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
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