Tag Archives: Exchange Online

Exchange Online: Microsoft deaktiviert Spam-Regel, die alles als Junk-Mail betrachtet hat (EX682041)

Posted on 2023-10-18 by guenni

[German]Exchange Online administrators may have received a number of copies of their users' outgoing emails classified as spam in the last few hours. The cause was a spam rule causing false-positive spam notifications. Microsoft has confirmed the whole thing as … Continue reading →

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Exchange Online: Incident EX680695 (Oct. 11, 2023)

Posted on 2023-10-12 by guenni

As of October 11, 2023, Exchange Online has experienced a severe mail traffic disruption. Several readers reported problems receiving emails from external email addresses. Microsoft has confirmed the incident and claims to have already rolled out a fix. Spoiler: They … Continue reading →

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Exchange Online: Retirement of Exchange Web Services (EWS) after October 1, 2026

Posted on 2023-09-20 by guenni

[German]Note to Exchange Online administrators. Microsoft has just announced in a blog post that it will discontinue Exchange Web Services (EWS) on October 1, 2026. All communication will then have to be done via Microsoft Graph from that date. So … Continue reading →

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Reminder: Remote PowerShell on Exchange Online will be disabled

Posted on 2023-08-15 by guenni

[German]Small reminder for administrators who maintain Microsoft's Exchange Online and still work with Remote PowerShell (RPS). In the meantime, Microsoft has deactivated RPS for new instances and this function can no longer be activated. In a few weeks, support for … Continue reading →

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Allegedly malicious notifications from teams through Defender ZAP

Posted on 2023-08-05 by guenni

[German]I would like to ask the administrators among the readership if anyone else is experiencing the effect mentioned here. An administrator contacted me because he has been getting reports of supposedly corrupt notifications from Teams for days. In use is … Continue reading →

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Exchange Online blocked emails (June 18, 2023)

Posted on 2023-07-18 by guenni

[German]Today, July 18, 2023, Microsoft's Exchange Online cloud service appears to have been experiencing a [partial] glitch since morning (8 a.m. UTM). German blog readers reported that emails are being blocked. There are various references to issues on 3rd party … Continue reading →

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Exchange Online: Client Credential Flow for SMTP AUTH available (July 2023)

Posted on 2023-07-16 by guenni

[German]Quick addendum from this week: Microsoft's Exchange team has already announced the availability of Client Credential Flow (CCF) for SMTP AUTH in Exchange Online on July 10, 2023. Client Credential Flow (CCF) for SMTP AUTH enables applications to use modern … Continue reading →

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Exchange Online: Updated requirements for SMTP relay as of November 1, 2023

Posted on 2023-06-20 by guenni

[German]Quick note for administrators who use Exchange Online as an SMTP relay to send bulk email. Microsoft is adjusting the requirements for using SMTP relay functionality accordingly as of November 1, 2023. The company made the announcement in a June … Continue reading →

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Exchange Online down for hours (June 5, 2023)

Posted on 2023-06-06 by guenni

[German]As of June 5, 2023, Microsoft's Exchange Online seems to have experienced a massive disruption. Administrators could no longer get into the Admin Center and Outlook could no longer be reached on the web. A user alerted me to this … Continue reading →

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Exchange Online: Client Access Rules (CARs) supported until Sept. 2024

Posted on 2023-04-19 by guenni

[German]A short note for administrators who are responsible for Exchange Online in companies and have used Client Access Rules (CARs) so far. Actually, the support for CARs should expire – but Microsoft announced a few days ago an extension of … Continue reading →

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