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Tag Archives: Exchange Online
Exchange Online: Can't change Tenant setting (since mid-May 2025)
[German]I'm posting an observation here in the blog that a reader pointed out to me – a second reader also seems to be affected. Administrators of Exchange Online tenants have noticed since around May 14, 2025 that they can no … Continue reading
Exchange Online: False SPAM flagging bug with GMail fixed
[German]A small addendum from the beginning of May 2025 regarding Exchange Online. Since April 25, 2025, there has been a problem with a machine learning model incorrectly marking emails from Gmail accounts in Exchange Online as spam. According to Microsoft, … Continue reading
Exchange Online: "Send as" authorization on shared mailbox disrupted (April 10, 2025)
[German]Microsoft is not having a good run at the moment – yesterday (April 9, 2025) the Exchange Admin Center was down worldwide for a few hours. Microsoft then rolled out a fix and everything seemed fine again. Today, I'm receiving … Continue reading
Microsoft 365: Mails are suddenly deleted after contacts deletion
[German]I have a rather strange case here that a blog reader and administrator has encountered. In February 2025, he reported that contacts were being sporadically deleted in some of his users' Microsoft 365 accounts. Now the administrator notices that emails … Continue reading
Exchange Online Tenant Outbound Email Limits starts in April 2025
[German]Microsoft is introducing outbound email limits for tenants to prevent misuse of Exchange Online by sending emails in bulk. This was announced by the Exchange team in February 2025. The limits were due to take effect in March 2025 and … Continue reading
Why ISL Online: Critical factors when choosing a remote desktop solution
[Sponsored Post]In the rapidly evolving IT world, choosing the right remote desktop software is critical for organizations that value security, ease of use and reliability. One provider of secure remote access that has been on the market since 2001 is ISL Online, which presents some considerations for choosing such software below. More ...
Solution for no access to Microsoft 365 mail account via Samsung Mail app
[German]There have been massive problems with Microsoft 365/Exchange Online since March 2025. And some readers and users are complaining that access to mailboxes via the Samsung Mail app is not working. A blog reader sent me a "spooky" solution to … Continue reading
Posted in Cloud, issue, Software
Tagged Android, App, Exchange Online, issue, Mail, Microsoft 365
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EX1038119: Exchange Online quarantines mails (21.3.2025)
[German]Short message for Exchange Online administrators. If no mails were delivered or messages ended up in quarantine as of today, March 21, 2025, it is not due to the tenant. Microsoft has posted a message in the Microsoft 365 Admin … Continue reading
Exchange Online outage locks out Outlook Web users (19.3.2025)
[German]On March 19, 2025, there was probably another major Exchange Online outage, meaning that Outlook users were no longer able to access their Exchange Online mailboxes on the web.
Exchange Online and MS365 problems due to vulnerability? (March 2025)
[German]Microsoft has been struggling with disruptions to its Microsoft 365 services and Exchange Online since February 2025, but is keeping quiet about the cause. I have received information that a bug or vulnerability in Microsoft Exchange Online has led to … Continue reading
Posted in Cloud, issue, Security, Software
Tagged Cloud, Exchange Online, Microsoft 365, Security
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Exchange Online: New limits for Dynamic Distribution Groups (DDGs) from April 2025
[German]Brief information for Exchange Online users and administrators. Microsoft will introduce new limits for Dynamic Distribution Groups (DDGs) from April 2025. This limits the number of Dynamic Distribution Groups (DDGs) that can be used per organization to 3,000.