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One Account Unable To Email

Posted on 2012-04-04
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Last Modified: 2012-04-22
Hi. We are running Exchange 2010. We can receive email no problem, however when one person tries to email us he receives a bounce back NDR with 550.5.2.1 "Users mailbox is disabled". The user that it is referring to is receiving mail fine so his mailbox is not disabled. Is the problem on their end? Anything I can suggest to them?

Thanks
0
Comment
Question by:James Parsons
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11 Comments
 
LVL 6

Expert Comment

by:HomerTNachoCheese
ID: 37806919
Have them email you the bounce message, and post it here, obscuring identifiable information.  Make sure that the email address is actually correct in this bounce message.

Verify that this external user can send email to your other internal users (such as yourself when you receive this forwarded bounce message).

Are there any third party servers sitting between your email server and theirs, such as one that filters spam before it hits your site?
0
 

Author Comment

by:James Parsons
ID: 37808345
Here's a copy of the NDR:

Your message did not reach some or all of the intended recipients.
      Subject:  RE: Mom
      Sent:     4/4/2012 1:43 PM
The following recipient(s) cannot be reached:
      'John Smith' on 4/4/2012 1:43 PM
            550 5.2.1 <email@email.com>... User's mailbox is disabled



They get the same NDR if they email anyone within our domain.  We are using a hosted exchange service and they have verified that everything is fine on their end.
0
 
LVL 6

Expert Comment

by:HomerTNachoCheese
ID: 37808375
Your sender may be on a real time block list.  The message they are getting may just be generic, not really stating the true reason.
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Author Comment

by:James Parsons
ID: 37808378
Ours is the only domain they cannot email to though. If they were on a block list wouldn't they have issues emailing other people also?
0
 
LVL 6

Expert Comment

by:HomerTNachoCheese
ID: 37808396
Try checking their domain here.  http://www.mxtoolbox.com/blacklists.aspx

Your email provider is probably doing the checking.  Not everyone they send to checks against these blacklists.

Sometimes hosted email providers make dumb mistakes and subscribe to blacklists that are unreliable, not updated properly, or have other problems.

You could contact your hosted provider to see if they are using rbl lists.
0
 

Author Comment

by:James Parsons
ID: 37808414
K. I checked on their domain using mxtoolbox as well as this tool http://domain-blacklist.e-dns.org/steeprock.ca
 and they are not blacklisted at all on any of those lists. I have a support ticket opened with our hosted exchange provider to confirm RBL, but I don't think the issue is there. I'm just trying to confirm whether it's our issue or theirs.

Thanks!
0
 
LVL 47

Expert Comment

by:apache09
ID: 37808854
"however when one person tries to email us he receives a bounce back "

Its likely their Outlook AutoComplete Cache is incorrect, Broken, or corrupt.

Have them open a new email.
Then have them start typing in the email address
when the suggestino list come up, have them delete the suggested email address.

Close and reopen new email

have them manually type in the full, current email address.

Then send

Does the email go through?
0
 

Author Comment

by:James Parsons
ID: 37812641
This is happening from mulitple accounts behind that same domain. Anyone trying to email us from email@theiraccount.com get's that message so I don't think it's the autocomplete cache. I'm trying to track down the full headers from the message.
0
 

Author Comment

by:James Parsons
ID: 37813695
Here's the headers:


X-Spam-Flag: NO
X-POP-User: a_authtest.testsitesc0.hostopia.com
Return-Path: <MAILER-DAEMON>
Received: from mail141c0.megamailservers.com (localhost [127.0.0.1])
                by mail141c0.megamailservers.com (8.13.6/8.13.1) with ESMTP id q35JGAwY022339
                (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO)
                for <doug.bauman@steeprock.ca>; Thu, 5 Apr 2012 15:16:10 -0400
Received: from localhost (localhost)
                by mail141c0.megamailservers.com (8.13.6/8.12.2/Submit) id q35JG9MM022336;
                Thu, 5 Apr 2012 15:16:10 -0400
Date: Thu, 5 Apr 2012 15:16:10 -0400
From: Mail Delivery Subsystem <MAILER-DAEMON@mail141c0.megamailservers.com>
Message-Id: <201204051916.q35JG9MM022336@mail141c0.megamailservers.com>
To: email@email.com
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
                boundary="q35JG9MM022336.1333653370/mail141c0.megamailservers.com"
Subject: Returned mail: see transcript for details
Auto-Submitted: auto-generated (failure)
X-CSC: 0
X-CHA: v=1.1 cv=lh44UtWtnogc/zYhpl5FLdabZ4jnSR7RtjGfdbKRMqg= c=1 sm=1
                                a=nS2RiVxO7-MA:10 a=wPDyFdB5xvgA:10 a=97DucmoFUr-VG1hLoD4A:9
                                a=BDKbP5mgAAAA:8 a=9jqVpqLktJYWvzaML7MA:9 a=NHkSJBZ8GlqYRtDaUUcA:9
                                a=QEXdDO2ut3YA:10 a=WkljmVdYkabdwxfqvArNOQ==:117
X-CTCH-Spam: Unknown
X-CTCH-RefID: str=0001.0A020206.4F7DEF7A.0054,ss=1,re=0.000,fgs=256
X-WHL: SLR
0
 

Accepted Solution

by:
James Parsons earned 0 total points
ID: 37858730
Looks like the issue was with the ISP and some sort of mapping issue on their end with routing email to that domain. The ISP was able to resolve the problem.
0
 

Author Closing Comment

by:James Parsons
ID: 37877393
The problem was caused and solved by the ISP. None of the solutions suggested worked.
0

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