Office 365: Converting a remote mailbox to a mail user…

In Office 365 it may become necessary to change recipient types for on premises accounts.  In this scenario contoso.com provided a mailbox within their Office 365 tenant for a user.  A decision was made to host the users mailbox within a different mail system but authentication would still occur against the contoso.com domain.  The desire…

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Office 365: Fatal error RecipientNotFoundPermanentException has occurred

In Office 365 administrators may experience almost immediate failures of migrations to Office 365.  The error is typically in the following format:   Error: Cannot find a recipient that has mailbox GUID ‘MAILBOX-GUID’.   The migration log shows the following information at the end of the log regarding the failure exception””:   9/11/2017 9:13:58 PM…

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Office 365: Users have both a cloud and on premises mailbox.

In Office 365 our provisioning logic generally prevents the existence of a mailbox on premises and in the service.  You can imagine the confusion of cloud messages delivering to a mailbox in the cloud and on premises messages delivering to a mailbox on premises.   When a mailbox is provisioned on premises the azure active…

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Handling Migrations – StalledDueToTarget_MdbFull or TargetDatabaseFullPermanentException

When an administrator provisions a migration batch to Office 365 and adds users, objects known as migration users are created, which you can view using Get-MigrationUser. When migration users and the corresponding move requests (Get-MoveRequest) are created an Exchange Online mailbox database is assigned to each mailbox that will be migrated.  Exchange Online uses an…

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DNS Errors and Warnings in the Office 365 Portal

  The Office 365 portal often offers information regarding the status and health of your services.    The DNS checks are not performed on each administrator logon to the portal.  The checks are performed by our Azure DNS infrastructure determining the Source of Authority (SOA) records for the registered domains.  This will return the list…

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Configure Auto Reply for a Mailbox

Administrators can view and configure auto reply settings for an Exchange Online mailbox using the Set-MailboxAutoReplyConfiguration and Get-MailboxAutoReplyConfiguration PowerShell cmdlets.   Using Set-MailboxAutoReplyConfiguration, you can schedule an automated reply to start at a specific time.  For example, to create a scheduled auto reply that starts at 6:00 pm Eastern Daylight Time (EDT) on August 16…

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Office 365: Clutter Enabled and Outlook Web Access

As most administrators are aware the clutter feature of Office 365 has been automatically enabled within their tenants.  End users manage the clutter feature through Outlook Web Access.  For example – https://support.office.com/en-us/article/Turn-off-Clutter-in-Outlook-a9c72a77-1bc4-40e6-ba6d-103c1d1aba4c?ui=en-US&rs=en-US&ad=US   Recently a customer presented with a tenant where clutter was not automatically enabled for them.  The users were not recently migrated, had…

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Exchange – No log files can be truncated.

In Exchange 2007 we introduced the ability to perform passive replica backups of an Exchange database.  In conjunction with this change we introduced a new method of determining when log files can be truncated.  Starting with Exchange 2007 log files are either truncated through the Information Store service or through the replication service.   The…

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Office 365 / Exchange Online – Disable One Drive for Business Integration

Exchange Online has been extended to take advantage of One Drive for Business as a location to access or store email attachments.  Users of Outlook Web Access may notice that they have the ability to now attach files from One Drive for Business (ODFB) when composing a new message.         In addition…

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Exchange and Office 365: Mail Forwarding

Exchange Server and Office 365 offer many different options for forwarding messages to different recipients. Some of these options exist for users and others are for administrators. Administrators can also control how forwarding is handled within the organization.   The forwarding options available to clients and administrators are described below. Each of these methods has…

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