Tim McMichael
Navigating the world of high availability...and occasionally sticking my head in the cloud...
Office 365: Challenges with Distribution Groups for Migrated Mailboxes and a Script Based Solution ( Script Version 1.4 )
In script version 1.3 we began the introduction of logic that allowed administrators to convert the...
Date: 03/19/2019
Office 365: Tracking last run times of the managed folder assistance / exchange life cycle.
In Office 365 the managed folder assistance is responsible for applying data retention policies to...
Date: 02/13/2019
Office 365: Dynamic distribution lists created by email domains.
Dynamic distribution lists offer excellent mechanisms to email groups of users based on their...
Date: 01/29/2019
Office 365: Challenges with Distribution Groups for Migrated Mailboxes and a Script Based Solution ( Script Version 1.1 )
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Date: 09/25/2018
Office 365: Challenges with Distribution Groups for Migrated Mailboxes and a Script Based Solution ( Script Version 1.0 )
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Date: 09/19/2018
Office 365: Stale Information in the Offline Address Book and Individual Contact Cards
In Office 365 an Exchange related object can be replicated from the on premises Active Directory to...
Date: 09/10/2018
Office 365: A different approach to handling Office 365 group mail flow…
In Exchange Online an Office 365 Group ( Unified Group / Modern Group ) allows for a new level of...
Date: 08/22/2018
Office 365: Unable to modify group membership in the Office 365 portal…
In Office 365 cloud only groups can have their membership managed through the Office 365 portal or...
Date: 08/21/2018
Office 365: Correcting users who have had a mailbox in the cloud and on-premises…
In some previous blog posts I have outlined conditions where users may have inadvertently had a...
Date: 07/15/2018
Office 365: Exchange Migrations and the data migrated information…
In Office 365 migration batches are the preferred method of establishing mailbox migrations to...
Date: 07/03/2018
Office 365: The mystery of mobile phone…
In the last few weeks I have worked several escalations from customers inquiring about...
Date: 07/01/2018
Office 365: Unable to locate an Azure Active Directory user for an Exchange Online Mailbox
In order for an Exchange Online mailbox to exist in Office 365 it must be attached to an Azure...
Date: 06/26/2018
Office 365: Mail disable an on premises security group…
Administrators may enable security groups on premises as distribution groups. [PS]...
Date: 04/29/2018
Office 365: Resetting a migrated users Azure Active Directory account….
In certain support circumstances it may become necessary to hard delete an Azure Active Directory...
Date: 04/29/2018
Office 365: Trusting application emails sent through internal relay…
In todays connected environments there are several applications that send email through designated...
Date: 04/22/2018
Office 365: Detecting and preventing duplicate mailboxes between On-Premises and Exchange Online
In Office 365 when licenses are assigned to a user a mailbox should not be provisioned if the user...
Date: 04/10/2018
Office 365: Internal forwarding and remote domains…
In Office 365 I often encourage customers to control user forwarding through the user of remote...
Date: 04/09/2018
Office 365: Licensing mail users results in mailbox objects.
In Office 365 we allow administrators to create mail user objects. A mail user object is a security...
Date: 04/09/2018
Office 365: Adding a cloud only distribution group as a member of a distribution group on premises…
Today I spoke with a customer that had a unique situation – at least for me. They have started to...
Date: 02/19/2018
Office 365: SPAM detection and reverse DNS lookups.
In Office 365 support we occasionally receive requests to review non-deliverable reports. In some...
Date: 02/09/2018
Office 365: Start-ManagedFolderAssistant in Office 365
In Office 365 administrators can invoke the managed folder assistant by using the...
Date: 02/07/2018
Office 365: Troubleshooting distribution lists and distribution list membership…
In Office 365 administrators may discover issues with distribution lists and distribution list...
Date: 02/06/2018
Office 365: Office 365 Groups and External / Guest Accounts
In support you often have interesting cases come across your desk – and sometimes the questions and...
Date: 02/06/2018
Office 365: ADConnect synchronization interval changed automatically…
In Azure AD Connect, the default synchronization interval is set to 30 minutes during installation....
Date: 01/23/2018
Office 365: Office 365 Groups and domain removals…
When customers desire to move a domain from one tenant to another or decommission a domain within a...
Date: 01/17/2018
Office 365: Organization Queue Quota Exceeded
In Office 365 there are several throttling limits that administrators may encounter that impact mail...
Date: 12/05/2017
Office 365: Enabling and creating a distribution list for first release users.
I had a customer present an inquiry to us on the management and communication of release release...
Date: 12/05/2017
Office 365: Domain verification by email validation…
In Office 365 domain verification was traditionally only available through DNS record validation....
Date: 11/12/2017
Office 365: Create a report of distribution group usage…
Occasionally we receive customer requests for generation of report data. Today I received a request...
Date: 11/07/2017
Office 365: Mail flow delays through third party SPAM gateways…
This week I had a customer present with an interesting issue. They have a partner company they work...
Date: 11/06/2017
Office 365: Bulk enabling auditing on Exchange Online Mailboxes
Auditing of mailbox operations are not enabled by default in Exchange Online. It is the...
Date: 11/05/2017
Office 365: Messages from external senders are originating directly on Office 365 servers….
Today I had an interesting case come across my desk. A customer wanted to enforce that all external...
Date: 10/24/2017
Office 365: DNS health checks and the Office 365 Portal
In recent weeks I have worked on several escalations regarding the DNS health checks in the Office...
Date: 10/22/2017
Office 365: Who can receive the weekly digest email…
In Office 365 we provide administrators the ability to access important information about the...
Date: 10/16/2017
Exchange, Cluster, and Network Thresholds
Cluster failures due to transient cluster communications problems can often lead to databases...
Date: 10/11/2017
Office 365: Upgrading legacy distribution lists to Office 365 Groups
Office 365 groups are the recommended replacement for legacy distribution groups in Office 365. You...
Date: 10/10/2017
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...
Date: 10/03/2017
Office 365: Fatal error RecipientNotFoundPermanentException has occurred
In Office 365 administrators may experience almost immediate failures of migrations to Office 365....
Date: 09/17/2017
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...
Date: 09/10/2017
Handling Migrations - StalledDueToTarget_MdbFull or TargetDatabaseFullPermanentException
When an administrator provisions a migration batch to Office 365 and adds users, objects known as...
Date: 08/22/2017
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...
Date: 08/15/2017
Configure Auto Reply for a Mailbox
Administrators can view and configure auto reply settings for an Exchange Online mailbox using the...
Date: 08/15/2017
Office 365: Clutter Enabled and Outlook Web Access
As most administrators are aware the clutter feature of Office 365 has been automatically enabled...
Date: 05/08/2016
Exchange – No log files can be truncated.
In Exchange 2007 we introduced the ability to perform passive replica backups of an Exchange...
Date: 08/23/2015
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...
Date: 06/14/2015
Exchange and Office 365: Mail Forwarding
Exchange Server and Office 365 offer many different options for forwarding messages to different...
Date: 06/08/2015
Office 365: Manage distribution groups that I own…
In Office 365 Outlook Web Access allows for individuals to manage distribution groups that the own....
Date: 05/19/2015
Office 365: Bulk update email addresses
In Office 365 there may be a need to perform a bulk update to email addresses across accounts. The...
Date: 05/17/2015
Exchange 2010 / Exchange 2013 – Determining the repair count of a database.
On the EHLO blog we recently announced a support change for databases that have been repaired. The...
Date: 05/06/2015
My Exchange 2013 DAG has gone commando…
Introduction When running Exchange 2013 on Windows Server 2012 R2, administrators can create a DAG...
Date: 04/29/2015