Morning All,
In the last 24 hours or so we've noticed a massive increase in legitimate emails being classified as Confirmed Spam and Quarantined. I can't see anything specific and nothing has been changed in our policies. We are using Office 365 exchange and our policy has all sender checks enabled with header anomalies sent to quarantine; Enhanced content and file property scan turned on along with Sandstorm?
Has anyone else had anything like this? If so how did you troubleshoot it / solve the issue?
Thanks
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