Missing emails? Exchange Online is tagging legitimate messages as spam - here's what to do

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ZDNET's key takeaways

• Legitimate emails in Exchange Online are being tagged as spam.
• A new URL rule is quarantining emails as phishing attempts.
• Microsoft has made some progress resolving the problem.

Those of you who use Microsoft's Exchange Online as your email service may find that important emails are failing to appear in your inbox. Late last week, the software giant acknowledged a problem with the online version of Exchange, causing legitimate emails to be quarantined as spam.

In a service alert spotted by BleepingComputer, Microsoft revealed that the glitch started on February 5 and has been preventing some Exchange Online users from sending and receiving emails.

"Some users' legitimate email messages are being marked as phish and quarantined in Exchange Online," Microsoft said in the service alert. "We've ...