Article ID: 2885002 - View products that this article applies to.
Some email messages that you receive from internal senders are unexpectedly moved to the Junk E-mail folder in Microsoft Outlook. This problem occurs even if the messages are stamped as having a Spam Confidence Level (SCL) value of -1 in Microsoft Exchange Server.
This problem may occur if Outlook does not correctly determine whether a secure connection is used. This may occur when one or both of the following conditions is true:
To resolve this issue, determine whether Outlook is configured to use Outlook Anywhere (RPC over HTTPS). For more information about Outlook Anywhere, see the following Microsoft Office website:
Use Outlook Anywhere to connect to your Exchange server without a VPNDepending on whether you are using Outlook Anywhere, follow the steps in whichever section is applicable.
If you are using Outlook AnywhereIf you are using Outlook Anywhere, install the appropriate Microsoft Outlook hotfix.
Outlook 2010This issue is fixed in the Outlook 2010 hotfix package that is dated February 11, 2014. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/2863918)Description of the Outlook 2010 hotfix package (Outlook-x-none.msp): February 11, 2014
Outlook 2013This issue is fixed in the Outlook 2013 hotfix package that is dated April 8, 2014. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
2878323After you install the hotfix, Outlook considers Outlook Anywhere to be a secure connection for the purposes of processing junk email messages.
(http://support.microsoft.com/kb/2878323)Description of the Outlook 2013 hotfix package (Outlook-x-none.msp): April 8, 2014
Note Outlook Anywhere is also known as RPC over HTTPS (Secure HTTP). As indicated by the term HTTPS, Outlook Anywhere connects to Exchange by using a Secure Sockets Layer (SSL) connection.
If you are not using Outlook AnywhereIf you cannot install the latest version of Outlook 2010 or Outlook 2013 and you are not using Outlook Anywhere, you can work around this problem if your mailbox is located on Microsoft Exchange Server 2010, or an earlier version.
To work around this problem, try to enable RPC encryption between Outlook and Exchange. To do this, follow these steps:
For more information about junk email filtering with Exchange Online, see the following Microsoft website:
Plan for Exchange Online security
For more information about how to configure junk email settings in Outlook, see the following Microsoft website, depending on the version of Outlook that you are using:
Outlook 2013: Configure junk email settings in Outlook 2013
Outlook 2010: Plan for limiting junk e-mail in Outlook 2010
Outlook 2007: Plan for limiting junk e-mail in Outlook 2007
Article ID: 2885002 - Last Review: July 15, 2014 - Revision: 10.0