Office 365 is a tremendous service that we all know and love. With Office 365, IT Pros and end users alike are equipped with a multitude of applications (Exchange Online, Teams, OneDrive, SharePoint, and more) that enable easier collaboration and increased productivity. Something as simple as collaborating on a word document in real time has changed the way people work.
M365 - Exchange Online Center
ENow Software's Microsoft Exchange Online blog built by Microsoft MVPs for IT/Sys Admins.
Office 365 (2)
Microsoft has had a bad run lately. First, there was Solorigate, a major supply-chain attack (hack), through which attackers seem to have been able to access and copy (parts of) source code for various Microsoft (cloud) solutions, including Exchange and Intune. Next, at the beginning of March 2021, there was ‘Hafnium’, a severe vulnerability in Exchange Server which left all on-premises installations of Exchange Server vulnerable to exploitation by a web shell, enabling attackers to fairly easily establish foothold into the on-premises environment.
Now that the long frigid months of winter have passed, spring is the time to open the windows, sweep away the cobwebs, and start anew. While most IT leaders would agree that keeping the IT house in order is very much a year-round effort, spring brings a reminder to pull out the white gloves and take a closer look for any technical debt hiding in the dusty corners. And your first order of business should be to begin re-assessing your Microsoft Exchange and Office 365 management strategy.
By establishing a hybrid deployment, you can extend the feature-rich experience and administrative control you have with your existing on-premises Exchange Server organization to the cloud. A hybrid deployment also offers support for a cloud-based archiving solution for your on-premises mailboxes with Exchange Online Archiving and may also serve as an intermediate step towards a complete migration of your on-premises mailboxes to Exchange Online.
I imagine that about a week after the first customer was on-boarded into Office 365 they decided that they needed to do a tenant-to-tenant migration. While that is probably not how it went, I suspect I am not too far-off reality with that one.
Customizing and configuring an Exchange organization has been a daily task for Exchange administrators for years. In a local Exchange organization, you can customize mostly anything you like. There is no requirement for enabling the organization for customization. But in Exchange Online, the situation is different.
In many organizations, there is no clear answer for the question "Who really owns Microsoft 365?" And because there's no simple answer, I’ve had to break this blog into two parts.
It is assumed that IT departments own Microsoft 365 (M365), as M365 is a technology platform, and that makes sense. However, in larger organizations, in which IT departments are made up of multiple business units or teams, who owns M365 amongst them?
Microsoft has about 258 million paid seats for Office 365, The Verge reported in April 2020. As a “shared medium” for a lot of organizations around the globe, it should be clear that there must be limits in the Microsoft 365 ecosystem, e. g. message size limits or Teams member limits. In this blog we'll cover recipient limits in Exchange Online.
In early June, Microsoft released a new PowerShell module for managing Exchange Online to the public. This module was already announced at Ignite 2019, but it took some time for the module to go into preview end of last year before reaching Generally Available status.