M365 - Exchange Online Archives

Exchange 2013 Exchange 2016 Exchange 2019 M365 - Exchange Online Microsoft Exchange Server 2022 [21H2/22H2/32H2]

Microsoft Exchange Server SE (Subscription Edition) ab Herbst 2025

07.05.2024 admin

Exchange SE (Subscription Edition), Exchange 2019 Nachfolger mit in-place Upgrade | Microsoft hat gerade Release-Informationen und eine Zeitlinie für die Einführung der neuen Exchange SE (Subscription Edition) veröffentlicht. Kunden können weiterhin rein On-Premises oder im Hybridmodus arbeiten, wie es ihren Bedürfnissen entspricht. Neu wird die Exchange SE jedoch ausschliesslich im Abonnementmodell erhältlich sein. […]

CRUNCH ENS | Endpoint Security FW Fortigate FW Sophos GPO | Gruppenrichtlinien Intunes M365 - Exchange Online M365,AZURE,INTUNE Mcafee/Trellix Microsoft SCCM,MEM,MDT Microsoft Server OS Scripting Tools we made Uncategorized W10 WSUS

CRL check, Zertifikatsperrlisten Software, Certificate Revocation List Check Tool zum suchen aller geblockten CRL in Firmenumgebungen, crlcheck.exe

06.04.2024 admin

Mit diesem Tool findet man schnell und einfach alle verwendeten CRL eines clients und kann prüfen ob der client diese erreicht. In den vergangenen Jahren habe ich persönlich miterlebt, wie die Zertifikatssperrung auf Windows-Systemen oft unterschätzt wird, selbst in großen Unternehmen. Dieses Problem beeinträchtigt sowohl Client- als auch Server-Systeme erheblich, wenn es nicht korrekt […]

Exchange 2013 Exchange 2016 Exchange 2019 M365 - Exchange Online M365,AZURE,INTUNE

Powershell to show and log SMTP Port 25, 465, 2525 after decomission old Exchange Server

03.04.2024 admin

Powershell to show and log SMTP Port 25, 465, 2525 after Decomission old Exchange Server When decommissioning an Exchange Server, it’s common to install SMTP/IIS to capture and redirect the failing SMTP sender traffic, allowing us to monitor if there’s still traffic coming to the old Exchange. Below is a PowerShell script that you […]

CRUNCH Deployment DLP | Data Loss Prevention ENS | Endpoint Security Exchange 2010 Exchange 2013 Exchange 2016 Exchange 2019 FW Fortigate FW Sophos Intunes M365 - Exchange Online Mcafee/Trellix Microsoft Exchange Microsoft SCCM,MEM,MDT Microsoft Server OS MSME | Security for Exchange Scripting SECURITY Server 2016 Server 2022 [21H2/22H2/32H2] TIE/ATD/ATP | Sandbox - Advanced Threat Protection Tools we made VMWare W10

CRLcheck.exe Certificate Revocation List Check Tool to verify all CRL and OCSP on Windows client

23.03.2024 admin

CRLcheck.exe Certificate Revocation List Check Tool to automatic verify CRL and OCSP internet reachability of all your EXE files that your client runs. Over the past 20 years, I have personally witnessed how Certificate Revocation on Windows systems is often underestimated, even within large enterprises. This issue significantly affects both client and server […]

Exchange 2016 Exchange 2019 M365 - Exchange Online

Enable Extended Protection for OS 2016 and Exchange 2016 (on-premises, no hybrid, no DAG) sample all steps explained

22.02.2024 admin

Here you will find all steps to protect from CVE-2024-21410 Exchange Leak. This sample handels and standlaone Exchange 2016 running on Server 2016. The customer has no DAG (Cluster), He is NOT in Hybrid Mode Classic or Modern (He has no CLOUD connection), all latest 02/2024 Windows Updates are installed, the latest CU for […]

Exchange 2013 Exchange 2016 Exchange 2019 M365 - Exchange Online Microsoft Exchange Server 2022 [21H2/22H2/32H2]

Exchange CVE-2024-21410 2016 2019 Extended Protection Kemp-F5 and Modern Hybrid Mode problem

19.01.2024 admin

Exchange CVE-2024-21410 2013/2016/2019 Extended Protection Kemp-F5 and Modern Hybrid Mode problem Primary target which is part of the attack: Make sure you ROLLOUT the Outlook.exe 02/2024 Patch. That is the most important thing. Esp. On Home Office/Remote Office which may have SMB/445 to WAN open and for VPN users NO traffic to/via VPN-2-HQ policy (Which […]

Exchange 2007 Exchange 2010 Exchange 2013 Exchange 2016 Exchange 2019 M365 - Exchange Online Microsoft Exchange Outlook

Exchange-Powershell-list-all-user-who-have-a-Forward-or-Redirect-active

22.11.2023 admin

List or change Inboxrules employee have > Automatic E-Mail forwards to private or external E-Mail systems. Problem: In Exchange, users are able to forward E-Mail themself to an external private account. This is a problem because of compliance and if you don’t have a DLP (Data Lost Prevention). There are ways to prevent this (With […]

CRUNCH M365 - Exchange Online M365,AZURE,INTUNE

M365/Intunes | MDM and MAM enrollement, Primary user, User Scope Limitation what affect

08.07.2023 admin

M365/Intunes | MDM and MAM enrolled difference explained First, let’s take a look at two different models: MDM and MAM. These models provide options for managing endpoints, including computers, clients, mobiles, and smartphones. Mobile Device Management (MDM) Often device corporate owned and paid (Regular employee of SBS or Enterprise) MDM […]

Azure M365 - Exchange Online M365,AZURE,INTUNE

M365/CLOUD, watch Microsoft status LIVE | See who has high volume traffic at homeoffice

27.06.2023 admin

https://twitter.com/MSFT365Status/status https://connectivity.office.com/status Microsoft M36X has been scaling up its information system to address downtime, which is unsurprising considering the recent outages experienced in the past months. Checking the Twitter Status M365 (https://twitter.com/MSFT365Status/status) in the morning is a good way to anticipate what to expect before opening your IT Support Ticket system. This allows you to […]

CRUNCH Exchange 2013 Exchange 2016 Exchange 2019 M365 - Exchange Online M365,AZURE,INTUNE Microsoft Exchange

M365/Exchange Hybrid OAuth Testing command, OAuth-Cert out-of-sync 4001, IIS VDIR OAuth wrong

21.06.2023 admin

www.butsch.ch Resolve and find OAuth problem in Exchange Hybrid Setup Environment Short Understanding OAuth: OAuth (Open Authorization) is an industry-standard protocol that enables secure authorization for third-party applications without the need to disclose user credentials. It allows users to grant limited access to their resources on one site to another site, without sharing their credentials. […]

Azure CRUNCH Exchange 2007 Exchange 2010 Exchange 2013 Exchange 2016 Exchange 2019 GPO | Gruppenrichtlinien M365 - Exchange Online M365,AZURE,INTUNE Microsoft Exchange Microsoft Server OS

Active Directory accounts with ADMINSholder/adminCount flag | No syncback from Azure, ms-ds-consistencyGuid

14.06.2023 admin

english, Management summary To gain a better understanding of the ADMINSholder/adminCount attribute, we recommend referring to the provided blog posts, which shed light on the impact of this flag, particularly regarding ActiveSync and GPO. This attribute poses a challenge in the synchronization process of the Synchronization Service Manager (Microsoft Azure AD Connect Synchronization Services) as […]

Azure ENS | Endpoint Security EPO | ePolicy Orchestrator Exchange 2013 Exchange 2016 Exchange 2019 M365 - Exchange Online M365,AZURE,INTUNE Mcafee/Trellix Microsoft Exchange SECURITY

M365, Exchange Online Remote Powershell blocked by T1056 Mitre Trellix

04.04.2023 admin

Trellix ENS 10.X, T1056 – Key capture using PowerShell detected, Host intrusion buffer overflow ExP:Illegal API Use Blocked an attempt to exploit C:\WINDOWS\SYSTEM32\WINDOWSPOWERSHELL\V1.0\POWERSHELL.EXE, which targeted the GetAsyncKeyState API. For efficient M365 and Exchange Online management, there are various methods available. While utilizing the PowerShell button within the Admin Portal is one option, it requires an Azure […]

Azure CRUNCH Exchange 2013 Exchange 2016 Exchange 2019 M365 - Exchange Online M365,AZURE,INTUNE Microsoft Exchange

M365/Hybrid Exchange Setup: Steps to verify on-premise, Prepare for Directory Synchronization (IDFIX, UPN, Proxyaddress)

03.02.2023 admin

TIP: Cleanup everything LOCAL before you even think of moving anything to M365 or Azure or even starting the Connector PRO TIP: Full manual list of Objects/attribute to check on your local ADS in this blog. This blog entry is mainly about those two steps of the MS Technet: https://learn.microsoft.com/en-us/microsoft-365/enterprise/prepare-for-directory-synchronization?view=o365-worldwide Directory Clean-up Tasks Directory object […]

Exchange 2010 Exchange 2013 Exchange 2016 Exchange 2019 M365 - Exchange Online M365,AZURE,INTUNE Microsoft Exchange

Exchange 2010 – 2016 Migration remove of old MDB fails (Mailboxexports)

28.07.2022 admin

Error: This mailbox database is associated with one or more active MailboxExport requests Source: This means you have current/Pending/stalled as sample PST Exports running (Maybe very old). Solution: You will have to remove those you are able to remove the emtpy old Exchange MDB. Get-MailboxExportRequest (ExchangePowerShell) | Microsoft Docs Microsoft Exchange Error […]

Exchange 2007 Exchange 2010 Exchange 2013 Exchange 2016 Exchange 2019 M365 - Exchange Online Outlook

WINMAIL.DAT (Exchange 2007-2016-M365) Outlook – DEUTSCH

25.10.2021 admin

WINMAIL.DAT Transport Neutral Encapsulation Format oder TNEF ist ein proprietäres E-Mail-Anhangsformat, das von Microsoft Outlook und Microsoft Exchange Server verwendet wird. Eine Datei mit TNEF-Codierung wird in der Regel als winmail.dat oder win.dat bezeichnet und hat einen MIME-Typ von Application/MS-TNEF. Der offizielle (IANA) Medientyp ist jedoch application/vnd.ms-tnef. Wie oder wann passiert das? Wenn ein Absender […]


Try our new Certificate Revocation List Check Tool CRLcheck.exe is a tool developed to verify digital signatures of executable files. It collects files from known paths on your client, checks their signature, and checks Certificate Revocation Lists (CRL) and OCSP download. This helps avoid delays in launching files.

Category: M365 – Exchange Online