Did I get zapped by ZAP?

ZAP, also known as Zero-hour Auto Purge, is a protection feature in Exchange Online that can move spam, phish, or malware messages from users’ inbox to their junk folder. This feature works in the background and can often be forgotten about. If a message is delivered to a mailbox, and then at a later time…

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Figure out which spam filter marked a message as spam

It has been quiet around these parts as of late. Much too quiet. To put that to an end, I have a handy tip today that could help in your spam troubleshooting adventures. For various reasons, organizations sometimes need to create multiple spam filters in Exchange Online. When troubleshooting a false positive (an inbound message…

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Cleaning up a full recoverable items folder

I recently worked with an organization where one of their users had a full Recoverable Items folder. This user had a hold on their mailbox, but also had the Exchange Online Unlimited Archive, so why had the Recoverable Items folder filled up and why were these items not being moved to the online archive? Let’s…

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Combating Display Name Spoofing

My lack of updates around these parts can be attributed to the craziness of work over the last few months. This afternoon I have some time and am typing this out as quickly as I can before someone notices and gives me something else to work on. Let’s begin. I’ve recently seen a very big…

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