Microsoft Exchange Online outage blocks access to mailboxes via IMAP4
ID: da2913bf-94f0-52e5-844c-46cd7e5b6185
STIX ID: report--da2913bf-94f0-52e5-844c-46cd7e5b6185
Feed Name: Bleeping Computer
Microsoft reported and resolved an Exchange Online IMAP4 outage that began on January 1 due to an authentication misconfiguration introduced by a recent deployment; after rolling out a configuration change across affected servers, normal service was restored by January 8. The report also references prior Microsoft service disruptions and the cancellation of a planned bulk email recipient limit policy.
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