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Exchange Online auto-expanding archiving deep dive: how it really works behind the scenes
Recently, I found myself digging into the inner workings of Exchange Online auto-expanding archiving. Although there is plenty of documentation explaining how to enable the feature, I was surprised by how little information exists about what happens behind the scenes once an archive starts to grow. Questions such as when the archive expands, what triggers the expansion process, how additional storage is allocated, and how administrators can determine the actual archive size are not always easy to answer.
Read MoreSecuring Direct Send in Exchange Online: closing the gaps in EOP-based MX setups
In the previous article we explored how to identify emails sent via Direct Send in environments where the MX endpoints are configured to route through third-party services. Now, we’ll focus on detecting and securing Direct Send usage in tenants whose MX records point to Exchange Online Protection (EOP).
Read MoreSecuring Direct Send in Exchange Online: when your MX points to third-party services
In recent months, Varonis Threat Labs revealed a critical vulnerability in Exchange Online’s Direct Send feature, drawing widespread attention across the cybersecurity community.
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