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Constant blank emails every minute - Outlook 2016. RRS feed

  • Question

  • Hello,

    We have the following environment:

    • Microsoft Exchange Server 2013.
    • Outlook 2016 clients. Approximately 20 user environment.
    • Symantec Endpoint Protection

    2 of our users are constantly receiving blank emails.  There is no Sender, no Subject, no Header information.  Just the date/time it was received.

    • The Exchange server does not show any message flow, and neither does the spam filter (AppRiver) logs.  The messages seem to be originating from the PC itself. 
    • The messages can be seen both in Outlook and on OWA. 
    • While monitoring OWA, we did find that the messages no longer show up when Outlook on the PC is closed (or the PC is turned off).  Messages return when PC & Outlook are back on.
    • The PC has been started in Safe mode - issues remain.
    • When Outlook is started in Safe mode, the issues stop.
    • Outlook profile has been recreated (new OST) - issues remain.
    • When Outlook's cached mode is disabled, the issues stop.
    • I have not cross checked the user's email account on different workstations out of concern that users will be bombarded by the issue, and with the problem being transferred to an additional PC.

    At this time, we are running these two machines with Outlook in Online mode.  However, for the sake of consistency, and to have Junk mail settings available, I would like to be able to return to Cache mode, once I have found the source of this problem.

    Any thoughts or suggestions?

    Thanks in advance,

    Rudy

    • Moved by Perry-Pan Friday, March 8, 2019 4:34 AM
    Thursday, March 7, 2019 4:43 PM

All replies

  • Hi Rudy,

    >>When Outlook is started in Safe mode, the issues stop.

    In case there were some spam add-ins installed on Outlook client, we can check for third-party COM add-ins and to disable them, follow these steps:

    1. On the File tab, click the Options.
    2. Click Add-ins.
    3. Select COM Add-ins from the Manage box, and then click Go.
    4. Click to clear the check box for all add-ins.
    5. Click OK, and then restart Outlook.

    Please check if issue continues.

    >> When Outlook's cached mode is disabled, the issues stop.

    One difference is that Outlook use local data files(.ost) under cached Exchange mode while Outlook directly access items from server under Online mode.

    To help check if this issue related with data file(.ost) or personal settings, we can also create a new profile to test the results.

    Any updates, please feel free to post back.

    Regards,

    Perry


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    • Proposed as answer by Perry-Pan Monday, March 11, 2019 4:54 AM
    Friday, March 8, 2019 4:11 AM
  • Hi Rudy,

    Have you checked the suggestion above? Does it work for you?

    If there are any updates, please feel free to post back.

    Regards,

    Perry


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.


    Click here to learn more. Visit the dedicated forum to share, explore and talk to experts about Microsoft Teams.

    • Proposed as answer by Perry-Pan Thursday, March 14, 2019 5:41 AM
    • Unproposed as answer by Perry-Pan Thursday, March 14, 2019 5:41 AM
    Tuesday, March 12, 2019 4:59 AM