I have long been interested in encryption. I started off my IT career in the United States Marine Corps where I had a Top-Secret security clearance and frequently worked with classified message traffic. During this time, I learned a lot about the rules of encryption and security. Most of what I learned, however, is that encryption is incredibly hard to do correctly.
M365 - Exchange Online Center
ENow Software's Microsoft Exchange Online blog built by Microsoft MVPs for IT/Sys Admins.
Office 365 is Microsoft's premier cloud service, and the clear leader in the "back office" server cloud offering market. If your organization has not moved to Office 365 yet, it's a safe bet that someone within your organization will be making a strong push to get you there soon.
In recent years, the Exchange Product Team began recommending the "Preferred Architecture" for Exchange On-Premises. Inspired by what Microsoft found successful in their Office 365 datacenters, the Preferred Architecture (PA) was designed with several business requirements in mind.
The Office 365 Portal is the main portal site for users to access their O365 cloud apps and admins to access the administration consoles for those apps. Unfortunately, the O365 Portal has become unavailable to some regions over the past few weeks, causing users and admins who rely on it to lose access to their apps and admin consoles.
If you’re reading this, the odds are good that at some point in your life you’ve seen a Disney movie of some sort. Many of these movies feature some sort of magic device that lets the characters see things they otherwise couldn’t see. Think of the wicked queen in Snow White chanting “Mirror, mirror, on the wall”. Microsoft offers something very similar in the form of the service health dashboard (SHD) in Office 365.
Reddit, a popular online discussion site, has a running joke: would rather fight a horse-sized duck or 100 duck-sized horses? This bizarre question has surprising relevance to Office 365, because while Microsoft customers often worry about the threat of a widespread large outage (the horse-sized duck), they’re actually getting beat up by a larger number of smaller, less damaging but still annoying outages (the group of duck-sized horses). There are deeper issues here that warrant a closer look in order to understand what the real risks are, and what you can do about them.
Traditionally, restricting where and from which device users could access their Mailbox in Office 365 required substantial configuration within Active Directory Federation Services (ADFS), or more recently, relied heavily on registration of compatible devices within Intune.
When you create a new mailbox in Exchange Online, that mailbox comes with specific settings, features, and protocols enabled. As an Office 365 administrator, you have the ability to go back and modify these settings later if - for instance - you don't want users to have their default mailbox size limit set at 100 GB, or if you want a specific retention policy applied to that mailbox.