Microsoft Exchange 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. […]

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 2013 M365,AZURE,INTUNE

Microsoft M365 O365 EXO throttles Exchange 2013 in HYBRID Exchange server version is out-of-date

04.03.2024 admin

Microsoft M365 O365 EXO throttles Exchange 2013 in HYBRID Mode, Queue is growing SMTP ERROR: Connecting Exchange server version is out-of-date Since December 2023, Microsoft has been throttling or blocking on-premises Exchange 2013 servers that are in Hybrid Mode, connecting to their cloud environment. Even if 99% of the mailboxes are already in the […]

Exchange 2007 M365,AZURE,INTUNE

Unable to delete Exchange Mailbox DSID-03152d1c, problem 4003 INSUFF_ACCESS_RIGHTS

29.02.2024 admin

ERROR: You want to delete a Exchange MAILBOX of a user. The user account is decativated. Crypt error: 0000005: SecErr: DSID-03152d1c, problem 4003 (INSUFF_ACCESS_RIGHTS), data 0 This is because a local normal employee user has the ADMINSholder/adminCount flags set to 1/true. (Which is not good in Domain Environments) This is because the Active […]

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 […]

Exchange 2016 Exchange 2019 M365,AZURE,INTUNE Microsoft Exchange

M365/Azure, Full Hybrid Mode, M365 user unable to see free/Busy Room/meeting or book on-premise

22.06.2023 admin

This post was published to Butsch.ch at 15:06:54 22.06.2023 M365/Azure, Full Hybrid Mode, M365 user unable to see free/Busy Room/meeting or book on-premise Account www.butsch.ch Category Exchange 2016 ; Exchange 2019 ; M365,AZURE,INTUNE ; Microsoft Exchange PROBLEM: The test.M365 (cloud) users are unable to access free/busy info from the on-premise room mailbox and […]

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. […]

Exchange 2016 Exchange 2019 M365,AZURE,INTUNE

Exchange 2013, 2016, 2019, Event 3028, KILLBIT error, you can safely ignore since 2014

20.06.2023 admin

We just stumbled again over the KILLBIT event 3028 warning on several Exchange Versions dated 06/2023. It still does not sound good from the text and you would think that some third party plugin or some health check blocks the files. Some say this is normal, some say you can safely ignore this. MS does […]

Exchange 2016 Exchange 2019 M365,AZURE,INTUNE Microsoft Exchange Outlook

M365 | on-premise, Outlook.exe DEBUG logging for troubleshooting complete guide

16.06.2023 admin

Enhancing Outlook Debug Logging for Troubleshooting Mike Butsch, www.butsch.ch What we want to do and why Outlook debug logging is a valuable tool for diagnosing and resolving issues within Microsoft Outlook. By enabling advanced logging, you gain deeper insights into the application’s behavior, allowing for more effective troubleshooting. In this blog post, we will explore […]

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 […]

Exchange 2016 M365,AZURE,INTUNE Microsoft Exchange

Exchange Office M365 customers will have to upgrade their Office 2016/2019 by October 2023

07.06.2023 admin

How we found this info beside Technet: Error: Outlook 2016 verlangt neues Update (Aktuell: 16.0.4266.1001 / Erforderlich: 16.0.4600.1000) There is a link in the warning which leads to the rather delicate info abour EOL of Office 2016/2019 with M365. Fact: If you don’t want to update your Office 2016/2019, keep your Exchange on-premise DAG with […]

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 […]


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: Microsoft Exchange