#exchangeonline — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #exchangeonline, aggregated by home.social.
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A Microsoft 365 RejectDirectSend bypass lets attackers spoof internal emails. Learn how this RejectDirectSend bypass works and how to protect your tenant.
#Microsoft365 #Phishing #EmailSecurity #ExchangeOnline #Cybersecurity
https://securityonline.info/rejectdirectsend-bypass/?utm_source=mastodon&utm_medium=jetpack_social
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A Microsoft 365 RejectDirectSend bypass lets attackers spoof internal emails. Learn how this RejectDirectSend bypass works and how to protect your tenant.
#Microsoft365 #Phishing #EmailSecurity #ExchangeOnline #Cybersecurity
https://securityonline.info/rejectdirectsend-bypass/?utm_source=mastodon&utm_medium=jetpack_social
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A Microsoft 365 RejectDirectSend bypass lets attackers spoof internal emails. Learn how this RejectDirectSend bypass works and how to protect your tenant.
#Microsoft365 #Phishing #EmailSecurity #ExchangeOnline #Cybersecurity
https://securityonline.info/rejectdirectsend-bypass/?utm_source=mastodon&utm_medium=jetpack_social
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A Microsoft 365 RejectDirectSend bypass lets attackers spoof internal emails. Learn how this RejectDirectSend bypass works and how to protect your tenant.
#Microsoft365 #Phishing #EmailSecurity #ExchangeOnline #Cybersecurity
https://securityonline.info/rejectdirectsend-bypass/?utm_source=mastodon&utm_medium=jetpack_social
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Hat noch jemand ungepatchte #Exchange 2016 / 2019 Instanzen im Einsatz, die über einen Connector an #ExchangeOnline angebunden sind? Bald können dann keine E-Mails mehr an EO übermittelt werden.
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Exchange Online blocking of outdated Exchange 2016 and 2019 servers begins in September 2026, requiring the October 2025 update baseline.
#Exchange #ExchangeOnline #Microsoft365 #EmailSecurity #ExchangeServer #HybridMail #ESU
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Ein weiterer Schritt in Richtung #DigitalSovereignty : #Outlook wird dann irgendwann nicht mehr zwingend notwendig sein
#Thunderbird stellt #ExchangeOnline auf #MicrosoftGraph um | iX Magazin https://www.heise.de/news/Thunderbird-stellt-Exchange-Online-auf-Microsoft-Graph-um-11439383.html #M365 #Microsoft365 #MS365 #MozillaThunderbird #OpenSource #MicrosoftOutlook
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#Microsoft working to fix #ExchangeOnline mailbox quarantine issue
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Ein Fehler bei #ExchangeOnline verschiebt harmlose E-Mails fälschlich in die Quarantäne und blockiert Kalender. #Microsoft arbeitet an einer Bereinigung der Server. https://winfuture.de/news,160199.html?utm_source=Mastodon&utm_medium=ManualStatus&utm_campaign=SocialMedia
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CVE-2026-56191: CRITICAL improper authentication in Microsoft Exchange Online (CVSS 10). Remote, unauthenticated attackers can tamper with systems. Official fix available — patch ASAP. Details: https://radar.offseq.com/threat/cve-2026-56191-cwe-287-improper-authentication-in-microsoft-microsoft-exchange-online-2fb5560625ca8222 #OffSeq #CVE202656191 #ExchangeOnline #Vuln
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Microsoft has delayed Exchange Online PowerShell's credential cutoff to December, while scripts using stored passwords could break after module updates.
#ExchangeOnline #PowerShell #Microsoft #Authentication #MultiFactorAuthentication #Microsoft365 #MicrosoftExchange
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Microsoft 365 : vos boîtes restent bloquées à 50 Go ? Voici comment passer à 100 Go https://www.it-connect.fr/microsoft-365-business-boites-100-go-quota-bloque/ #ExchangeOnline #Microsoft365 #Entreprise #Microsoft
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E-Mail-Fälschung bei #ExchangeOnline: Ghost-Sender betrifft viele Unternehmen | Security https://www.heise.de/news/Ghost-Sender-Exchange-Online-laesst-gefaelschte-E-Mails-anstandslos-durch-11327666.html #CyberCrime
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https://winbuzzer.com/2026/05/21/microsoft-alert-emails-abused-to-deliver-scam-links-xcxwbn/
Scammers are abusing Microsoft's trusted account-notification email channel to send spam or phishing links that can look like legitimate Microsoft alerts.
#MicrosoftAccount #Microsoft #Cybersecurity #Cybercrime #PhishingAttacks #MicrosoftSecurity #ExchangeOnline
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Microsoft to Block Legacy TLS on Exchange Online in July 2026
#ExchangeOnline #MicrosoftExchange #Microsoft #Microsoft365 #Cybersecurity
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Microsoft to require TLS 1.2 or later starting July 2026 when connecting to Exchange Online
https://www.bleepingcomputer.com/news/microsoft/microsoft-to-deprecate-legacy-tls-in-exchange-online-starting-july/
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Microsoft exigera TLS 1.2 ou ultérieur à compter de juillet 2026 lors des connexions à Exchange Online// Article en anglais //
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https://winbuzzer.com/2026/03/25/microsoft-exchange-server-se-multi-version-support-ended-xcxwbn/
Microsoft Ends Exchange Multi-Version Support in Major Overhaul
#Microsoft #MicrosoftExchangeServer #ExchangeOnline #ExchangeServer #Email #ActiveDirectory #Microsoft365 #Cloud #HybridCloud #Administrators #BigTech
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Gibt es Probleme auf #ExchangeOnline Postfächer zuzugreifen? Die von MS eingeführten virtuellen Konten scheinen die Ursache zu sein. MS ist seit dem 11. März dran ...
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Microsoft Launches HVE for Exchange Online, Free Until May
#Microsoft #ExchangeOnline #Microsoft365 #MicrosoftCloud #BigTech ##Microsoft365AdminCenter #EnterpriseSoftware #BusinessCommunicationPlatforms #SaaS #HighVolumeEmail
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Eigentlich hatte ich 13Uhr meinen Feierabend geplant.
Jetzt, 3,5 Überstunden später, ist endlich Schicht. Grund? Das jährliche Hochamt der Microsoft-Lizenzierung. Ein Quell ewiger Freude!
Kosten drücken, Lizenzen jonglieren und beten, dass am Ende niemandem die Funktionalität wegstirbt oder das Kartenhaus kollabiert. Einmal im Jahr immer wieder diese zeitschindende Aufgabe. Wer übernimmt das für mich nächstes Jahr?
#Microsoft #LicensingHell #SysAdmin #AdminLife #ExchangeOnline #IT #Überstunden -
FYI: #ExchangeOnline PowerShell Parameter "-Credential" ist veraltet - funktioniert nach Juni 2026 nicht mehr.
https://borncity.com/blog/2026/02/13/exchange-online-powershell-parameter-credential-ist-veraltet/
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Seit dem 5. Februar stuft #ExchangeOnline legitime E-Mails fälschlicherweise als Phishing ein. Eine fehlerhafte URL-Regel sorgt dafür, dass Nachrichten automatisch in Quarantäne landen. https://winfuture.de/news,156723.html?utm_source=Mastodon&utm_medium=ManualStatus&utm_campaign=SocialMedia
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https://winbuzzer.com/2026/02/09/microsoft-exchange-online-flags-legitimate-emails-phishing-xcxwbn/
Microsoft Exchange Online Falsely Flags Legitimate Emails as Phishing
#ExchangeOnline #Microsoft #Cybersecurity #Security #MicrosoftExchange #PhishingAttacks #BigTech #Email #MicrosoftSecurity #Cloud #Phishing #MicrosoftCloud
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Microsoft prévient : Exchange Online EWS sera désactivé en avril 2027 ! https://www.it-connect.fr/microsoft-previent-exchange-online-ews-sera-desactive-en-avril-2027/ #ExchangeOnline #Microsoft365 #Entreprise #Microsoft
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Does anybody here use the #MSGraph API for accessing #OutlookCom / #ExchangeOnline?
Deleting events via my app used to work fine. However, ~8 weeks ago, MS Graph started including a "Transfer-Encoding: chunked" header in its "204" responses. The event is still deleted, but my #HTTP client rejects the response because it violates RFC 9112.
If you know the reason, can confirm/refute what I see, or get #Microsoft to notice my Q&A post, I'd be very grateful!
Details here: https://learn.microsoft.com/en-us/answers/questions/1205295/why-does-event-deletion-respond-with-transfer-enco
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Does anybody here use the #MSGraph API for accessing #OutlookCom / #ExchangeOnline?
Deleting events via my app used to work fine. However, ~8 weeks ago, MS Graph started including a "Transfer-Encoding: chunked" header in its "204" responses. The event is still deleted, but my #HTTP client rejects the response because it violates RFC 9112.
If you know the reason, can confirm/refute what I see, or get #Microsoft to notice my Q&A post, I'd be very grateful!
Details here: https://learn.microsoft.com/en-us/answers/questions/1205295/why-does-event-deletion-respond-with-transfer-enco
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Does anybody here use the #MSGraph API for accessing #OutlookCom / #ExchangeOnline?
Deleting events via my app used to work fine. However, ~8 weeks ago, MS Graph started including a "Transfer-Encoding: chunked" header in its "204" responses. The event is still deleted, but my #HTTP client rejects the response because it violates RFC 9112.
If you know the reason, can confirm/refute what I see, or get #Microsoft to notice my Q&A post, I'd be very grateful!
Details here: https://learn.microsoft.com/en-us/answers/questions/1205295/why-does-event-deletion-respond-with-transfer-enco
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Does anybody here use the #MSGraph API for accessing #OutlookCom / #ExchangeOnline?
Deleting events via my app used to work fine. However, ~8 weeks ago, MS Graph started including a "Transfer-Encoding: chunked" header in its "204" responses. The event is still deleted, but my #HTTP client rejects the response because it violates RFC 9112.
If you know the reason, can confirm/refute what I see, or get #Microsoft to notice my Q&A post, I'd be very grateful!
Details here: https://learn.microsoft.com/en-us/answers/questions/1205295/why-does-event-deletion-respond-with-transfer-enco
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Does anybody here use the #MSGraph API for accessing #OutlookCom / #ExchangeOnline?
Deleting events via my app used to work fine. However, ~8 weeks ago, MS Graph started including a "Transfer-Encoding: chunked" header in its "204" responses. The event is still deleted, but my #HTTP client rejects the response because it violates RFC 9112.
If you know the reason, can confirm/refute what I see, or get #Microsoft to notice my Q&A post, I'd be very grateful!
Details here: https://learn.microsoft.com/en-us/answers/questions/1205295/why-does-event-deletion-respond-with-transfer-enco