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CFS is blocking connections to Microsoft Office 365 Outlook application

10/14/2021 978 People found this article helpful 115,162 Views

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    Description

    Company's Microsoft Exchange server in the network is hosted as Office 365 online services, when users try to access the mailbox, CFS doesn't allow connections to Microsoft Office 365 Outlook mailbox.

    Resolution

    Resolution for SonicOS 6.5

    This release includes significant user interface changes and many new features that are different from the SonicOS 6.2 and earlier firmware. The below resolution is for customers using SonicOS 6.5 firmware.

    In this case, we need to white list the domains which are supported by Microsoft Office 365 Outlook.

    1. Click  Manage tab.
    2. Navigate to Security Services | Content Filtering and make sure it is enabled and a CFS policy is applied.
      Image

    3. On appropriate CFS policy, check the Profile associated (CFS Default Profile in this case).
    4. Go to Objects | Content Filter Objects | CFS Profile Objects tab and edit the Profile above.

      Image

    5. Click Create new URI List Object.
      Image

    6.  In the URI list enter the each of the following domains and click Add.

      aadrm.com
      activedirectory.windowsazure.com
      glbdns.microsoft.com
      live.com
      lync.com
      microsoft.com
      microsoftonline.com
      microsoftonline-p.com
      microsoftonline-p.net
      microsoftonlineimages.com
      microsoftonlinesupport.net
      msecnd.net
      msocdn.com
      msn.com
      msn.co.jp
      msn.co.uk
      onmicrosoft.com
      office.com
      office.net
      office365.com
      officeapps.live.com
      outlook.com
      phonefactor.net
      Sharepoint.com
      Sharepointonline.com
      outlook.office365.com
      login.microsoftonline.com
      spoprod-a.akamaihd.net


    7. Click OK in CFS policy configure window.
    8. Click Accept in CFS settings.

    How to Test:

    Restart the Microsoft Outlook application and synchronize the mailbox.

    Resolution for SonicOS 6.2 and Below

    The below resolution is for customers using SonicOS 6.2 and earlier firmware. For firewalls that are generation 6 and newer we suggest to upgrade to the latest general release of SonicOS 6.5 firmware.

     

     

     

     

    In this case, we need to white list the domains which are supported by Microsoft Office 365 Outlook.

    1. Navigate to Network | Zones.
    2. Make sure that, CFS is applied to appropriate Zone.

      Image
    3. Navigate to Security Services | Content Filtering | Configure

      Image

    4. On appropriate CFS policy, click Configure button on right (Office 365 Allow policy, in this case).

      Image

    5. Click Custom List tab.
    6.  In allowed domains section, enter the each of the following domains and click Add.

      aadrm.com
      activedirectory.windowsazure.com
      glbdns.microsoft.com
      live.com
      lync.com
      microsoft.com
      microsoftonline.com
      microsoftonline-p.com
      microsoftonline-p.net
      microsoftonlineimages.com
      microsoftonlinesupport.net
      msecnd.net
      msocdn.com
      msn.com
      msn.co.jp
      msn.co.uk
      onmicrosoft.com
      office.com
      office.net
      office365.com
      officeapps.live.com
      outlook.com
      phonefactor.net
      Sharepoint.com
      Sharepointonline.com
      outlook.office365.com
      login.microsoftonline.com
      spoprod-a.akamaihd.net

      Image

    7. Navigate to Settings tab, select Source of Allowed Domains to Per Policy.

      Image

    8. Click OK in CFS policy configure window.
    9. Click Accept in CFS settings.

    How to Test:

    Restart the Microsoft Outlook application and synchronize the mailbox.

    Related Articles

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    • Supported SonicWall and 3rd party SFP and SFP+ modules that can be used with SonicWall NSsp series
    • Supported SonicWall and 3rd party SFP and SFP+ modules that can be used with SonicWall NSA series

    Categories

    • Firewalls > TZ Series > Content Filtering Service
    • Firewalls > SonicWall SuperMassive 9000 Series > Content Filtering Service
    • Firewalls > NSa Series > Content Filtering Service
    • Firewalls > NSv Series > Content Filtering Service

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