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POP3 error Exchange 2010 on SBS 2011

Posted on 2014-08-28
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Getting errors for one user mailbox.  Running Exchange 2010 on SBS2011.  Email is failing when trying to pull from our ISP via POP3 to the Exchange mailbox.  The exact same email (it is from a vendor we work with) successfully delivers to two other exchange mailboxes without error.  But for this one user, the pop3service.log shows:

ERROR: 0x800ccc07 ("m_pSocket->SendBytes( pszLine, lstrlenA( pszLine ), &cbSent )") at d:\wssg_src\sbs_sbs7\sbs\src\messaging\pop3\ixpbase.cpp:895.
[t 0] 08/28/14, 11:27:50: Unfamiliar error delivering mail: 554
[t 0] 08/28/14, 11:27:50: Full response details:
[t 0] 08/28/14, 11:27:50: SMTPRESPONSE:    * * *   !Failed!   * * *
[t 0] 08/28/14, 11:27:50:                  * * *              * * *
[t 0] 08/28/14, 11:27:50:                  * * *  0x800ccc6f  * * *
[t 0] 08/28/14, 11:27:50:       Command: [SMTP_DOT]
[t 0] 08/28/14, 11:27:50:     Completed: Yes.
[t 0] 08/28/14, 11:27:50:     IxpResult:
[t 0] 08/28/14, 11:27:50:   ---> ---> --->  hrResult: 0x800ccc6f
[t 0] 08/28/14, 11:27:50:                pszResponse: 554 5.1.0 Sender denied
[t 0] 08/28/14, 11:27:50:              uiServerError: 554
[t 0] 08/28/14, 11:27:50:              dwSocketError: 0
[t 0] 08/28/14, 11:27:50:                pwszProblem: <none>
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Question by:lbit
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Expert Comment

by:Simon Butler (Sembee)
ID: 40291394
The email is corrupt, there is nothing else you can do but login to the mailbox and remove the message.
The only other thing you could do is stop using the POP3 connector and switch to SMTP delivery, as Exchange is designed to be used. The POP3 connector is only supposed to be a stop gap to help migrate to SMTP delivery.

Simon.
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Author Comment

by:lbit
ID: 40291410
Just to clarify- are you saying I need to delete the Exchange mailbox or the mailbox on our ISP where the message is sitting?

And I agree, I should switch to SMTP.  Any recommendations on where to find step-by-step on how to make the switch?
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Author Comment

by:lbit
ID: 40291468
Sorry- you said delete the message.  I have deleted the message from the ISP mailbox, but the next one that comes in is rejected by Exchange.  So that does not help
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LVL 63

Expert Comment

by:Simon Butler (Sembee)
ID: 40293187
If the next message is also being rejected then either you have a series of messages that are corrupt (not unusual) or something is interfering with the traffic flow to get in the way. That could be outside of your control. In that scenario there isn't much you can do. The POP3 connector is very much "what you see is what you get". If it doesn't work then there are limited other options.

Simon.
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Author Comment

by:lbit
ID: 40295586
Ok, so I guess there really is no solution?  My biggest confusion is that the exact same message delivers fine to other user mailboxes.  It's just this one user that has problems.
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LVL 63

Expert Comment

by:Simon Butler (Sembee)
ID: 40300592
The only real solution is to stop using the POP3 connector. This is a very common issue, and the problem is with the remote server, not SBS.

Simon.
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Accepted Solution

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lbit earned 0 total points
ID: 40373494
Did not get a solution to this issue.
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Author Closing Comment

by:lbit
ID: 40381698
The suggested steps either did not apply or did not work.
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