Receiving Emails - Help!!!

For no aaparent reason and nothing being changed it sounds like one cannot email to Does anyone have any ideas? It happened this afternoon and nothing have been changed. The Windows 2000 with Exchange 2003 with all latest patches.

When I try to send an email from my yahoo account it comes back saying that the receipent does not exists and has this error. Any ideas???


Hi. This is the qmail-send program at
I'm afraid I wasn't able to deliver your message to the following
This is a permanent error; I've given up. Sorry it didn't work out.

<>: does not like recipient.
Remote host said: 550 5.7.1 Unable to relay for
Giving up on

--- Below this line is a copy of the message.

Return-Path: <>
Received: (qmail 33934 invoked by uid 60001); 26 Apr 2006 00:04:10
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws;
Message-ID: <>
Received: from [] by via HTTP;
Tue, 25 Apr 2006 17:04:10 PDT
Date: Tue, 25 Apr 2006 17:04:10 -0700 (PDT)
From: Ragini Varma <>
Subject: Hi!
MIME-Version: 1.0
Content-Type: multipart/alternative;
Content-Transfer-Encoding: 8bit

Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit

This is just a test

Have a wonderful day!!!

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Recipient Policy controls what addresses Exchange thinks it is responsible for - so check that the policy for that domain is still enabled.

Drop in to a command prompt and type


and press enter. That resets the IIS system which manages the SMTP server.

Your server isn't announcing itself properly. Not that will be the cause of the problem, but it could cause you to have email delivery issues.

gorhamoienAuthor Commented:
Yes it is still enabled as nothing has changed. I did a reset of iisreset and still no go
What happens if some internal user sends an email to the address mentioned?

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Is the recipient policy that controls that domain the default recipient policy or an additional one?

gorhamoienAuthor Commented:
We have no problem sending anywhere and receiving emails now from some domains. Nothing has changed still. From Yahoo it still says the same thing and some others are getting. on 4/26/2006 11:31 AM
  You do not have permission to send to this recipient. For assistance, contact your system administrator.
  <Exchange.goexchange.local #5.7.1 smtp;550 5.7.1 Unable to relay for>

Is there a way to flush DNS cache?  It is making no sense. Yes there is only one domain and that is the default. It has been working for years and all of a sudden with no apparent reason does not work.
You cannot control the DNS that Yahoo are using. If you are starting to receive email on that domain then they could be using old information, you will have to wait for that to be flushed out - it will take three days (48 hours+).


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