If you have a 3rd party mail gateway in front of your Exchange Online tenant and haven’t already fixed the bypass issue, then you’re opening yourself up to inbound emails that completely skip the usual checks performed by Exchange Online Protection. What is the bypass issue? If you use a 3rd party gateway as your… Read More: The EXO 3rd Party gateway bypass is even worse than… »
If you’ve ever needed to do some troubleshooting with Exchange Online (EXO) message delivery, you’ll know how useful the Extended Report capability can be. One thing I noticed recently is that while the Summary Report is typically available within a few minutes of the message being handled by EXO, it can take considerably longer for… Read More: Patience required when running Extended Reports in Message Trace »
If, like me, you regularly lose track of what features exist where in the plethora of Microsoft cloud portals, hopefully this list will help you find your way. Or at least give you a URL as a starting point. I’ll attempt to keep this up-to-date, so if you see something missing please leave a comment… Read More: A list of Microsoft Portals »
For some organisations, encryption of data at rest is considered an important security control, especially in the context of cloud solutions. With core Office 365 services (SharePoint Online and Exchange Online) you have the option of controlling your own keys through the method known as Customer Key. But is there anything built-in that provides encryption… Read More: Exchange Online – Are your mailboxes encrypted? »
I’ll get to the problem with Powershell Execution Policy shortly, but first a bit of background… If your AAD/O365 admin accounts are configured for multi-factor authentication (which they should be, because it’s free), you will likely be familiar with the Exchange Online PowerShell Module, which is designed to work with MFA. Getting to the Module… Read More: Exchange Online PowerShell Module and Execution Policy »
Actually, this is more of a question than answer – although I have an answer of sorts, albeit far from elegant. I’ve been scheduling some batch onboarding mailbox migrations from a hybrid environment with Exchange 2010 to Exchange Online. The batch process is pretty straightforward, but I haven’t found an easy way to dump the… Read More: How to extract a list of mailboxes from an Exchange… »
It seems that a couple of weeks ago my standalone Exchange Online Protection (EOP) configuration was changed without me being involved. Basically, it looks like my default Accepted Domain was changed from type “Internal Relay” to “Authoritative” without my knowledge or consent. The first I knew of this was when I noticed my on-premises mail… Read More: EOP Accepted Domain silently modified »