Tag Archives: Exchange Online

Fixing the "ExchangeGuid is mandatory on UserMailbox" issue

During a recent Office 365 migration project I ran into an issue on the on-premises Exchange 2013 platform, when trying to create Mail User objects for the migrated mailboxes. The following error appeared when adding a new Mail User: ExchangeGuid is mandatory on UserMailbox. Database is mandatory on UserMailbox. After first verifying that the Exchange… Read More »

How to resolve Mail Users not synced to Azure AD

In a recent support case, the migration of mail boxes from an on-premise Domino platform to Exchange Online was started, but the migration got stuck because the on-premises accounts, enabled as Mail Users, did not appear in “Contacts” in the Exchange Online Admin Center. Also, in the on-premises environment Azure AD Connect was present and… Read More »

Cumulative Updates released for Exchange 2016 and Exchange 2013

Microsoft has just released the Exchange Server 2013 Cumulative Update 13 and the Exchange Server 2016 Cumulative Update 2. These updates include both normal fixes to customer reported issues and updated functionality. Added functionality and fixes: .Net 4.6.1 Support AutoReseed Support for BitLocker SHA-2 Support for Self-Signed Certificates Migration to Modern Public Folder Resolved (KB3161916)… Read More »

Reference to msExchRecipientDisplayType, msExchRecipientTypeDetails and msExchRemoteRecipientType values

Integrating an on-premise Active Directory and Exchange organization with Microsoft Cloud Services will require attention to new elements and details. As an example the list of object attributes in the on-premises Active Directory schema differs from the attributes in the Azure and Office 365 services directory platforms. An example is three critical values that are… Read More »

How to resolve slow Outlook 2016 Autodiscover with Office 365

As the use of Office 2016 has started to gain momentum, a number of organizations have experienced cases where Outlook 2016 take extraordinary long time to setup a new profile with a hosted Exchange 2010/2013 solution, like Exchange Online. The situation is furthermore complicated when the option to manually enter the Exchange server settings is… Read More »

How to whitelist addresses in Exchange Online Protection (EOP)

In order to ensure that specific emails are marked as spam or not, Exchange Online or Exchange Online Protection (EOP) support the use of transport rules, to make whitelists or blacklists, and control how messages are processed, whether if you need to bypass spam filtering in order to prevent good email messages from getting marked… Read More »

New Office 365 Hybrid Configuration Wizard released

The Exchange hybrid team have released the latest version of the Hybrid Configuration Wizard (HCW). This new version is called the Microsoft Office 365 Hybrid Configuration Wizard, and is the first version that is developed as a standalone, downloadable application, instead of being part of the on-premise Exchange server product. The new HCW provides great… Read More »

How to configure Sent Items behavior in Office 365 shared mailboxes

Shared mailboxes in Office 365 provides a flexible and simple solution for multiple users to manage and communicating using a common mailbox – and as an added benefit, shared mailboxes in Office 365 by default does not require a license. Access to a shared mailbox require a standard Exchange Online mailbox, where delegation can be… Read More »

How to setup an Office 365 SMTP Relay

Many organizations that move mailboxes to Office 365, still need to use a SMTP relay to route mails from on-premise applications, scanners (print-to-PDF) or multifunction devices to either internal or external recipients. Using Exchange Online in Office 365 for mail relay can be accomplished in three ways; SMTP client submission Here you configure the devices… Read More »

Simplified Connector Management in Office 365

Just like an on-premise Exchange platform, connectors are central for managing the mail flow to and from Exchange Online. Exchange Online do not by default require custom connectors, Microsoft have already setup all the basic, required connectors for standard mail flow to work, when the service is initially activated. At some point, many organizations will… Read More »