• Active Directory Dirsync Error DeletingCloudOnlyObjectNotAllowed

    In order to resolve you will have to remove the attribute of immutable ID using the SET MSOL CMDLET The Active Directory “objectGUID” is used as your ImmutableID. After your initial sync, objects in the cloud will have the base-64 version of the objectGUID stamped as the ImmutableID ( ) Example of the error Example…

  • Hiding Leavers from the Address list GAL – Exchange Hybrid ( Mail / Mail nickname )

    I have recently encountered an issue in our tenancy. Whereas, leavers were still showing in the address list after being converted to shared mailboxes. The Case study with Leavers Requirements for the Fix MS Exchange Hide From address list attribute must sync to Azure AD from your on premise Active Directory In order to accomplish…

  • 365 Defender – Safe attachments’ policy & Safe Documents

    As you all know, attackers, use widely malicious attachments to perform “Initial access”. Safe attachments is one of our defences in order to prevent that in our Environment Safe Attachments provides an additional layer to the Antimalware Exchange protection. Safe Attachment works with Machine Learning in order to protect your users inbox Policies may take…

  • Advanced Features 365 Defender

    Advanced features in 365 defender could be updated & Added as we go. For this particular reason, is a good exercise to keep up with news & the advanced features on the 365 portal. We’re going to review all possible features you can enable in Defender First step. How to access the Features? https://security.microsoft.com/securitysettings Custom…

  • Phish delivered due to an ETR override – Defender & Sentinel

    This alert fires when message containing phish was delivered due to an ETR override. ( mail flow rule ) In order to resolve and troubleshoot . We have to get into the exchange mail flow portal and investigate why could potentially a mail flow rule allow phising emails . In the following scenario we have…