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Exchange Team Blog

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2,587

Finding Transport Rule Size Part 2 – Regex Limit

The_Exchange_Team on Aug 11 2022 12:48 PM
We have received questions from customers who want to know how to determine the character limit for regular expressions ...
62.6K

Released: August 2022 Exchange Server Security Updates

The_Exchange_Team on Aug 09 2022 10:04 AM
We are releasing a set of security updates for Exchange Server 2013, 2016 and 2019.
15.2K

Announcing OAuth 2.0 Client Credentials Flow support for POP and IMAP protocols in Exchange Online

The_Exchange_Team on Jun 30 2022 11:04 AM
Today, we’re excited to announce the availability of OAuth 2.0 authentication via client credentials grant flow for the ...
9,303

Exchange Server 2013 End of Support Reminder

Scott Schnoll on Jun 24 2022 02:03 PM
Exchange Server 2013 will reach End of Support on April 11, 2023, and we strongly recommend that you migrate from Exchan...
36.1K

Microsoft and Apple Working Together to Improve Exchange Online Security

The_Exchange_Team on Jun 16 2022 08:00 AM
Today we’re delighted to take the next step along the journey to transition away from basic auth by sharing the work we’...
9,496

Consistently block delegates or shared mailbox members from accessing protected messages in Outlook

The_Exchange_Team on Jun 06 2022 01:58 PM
Based on customer feedback, we are introducing new Get/Set/Remove-MailboxIRMAcess cmdlets that provide admins with more ...
53.6K

Exchange Server Roadmap Update

The_Exchange_Team on Jun 02 2022 10:01 AM
We are now ready to share our long-term roadmap for Exchange Server.
13.3K

MEC is Back!

The_Exchange_Team on Jun 02 2022 10:00 AM
Today, we are thrilled to announce the Microsoft Exchange Community (MEC) Virtual Technical Airlift, which will take pla...
7,190

Open Enrollment for Exchange Server 2019 TAP

The_Exchange_Team on Jun 02 2022 10:00 AM
Today we are excited to announce that the Exchange Server 2019 Technology Adoption Program (TAP) is accepting nomination...
13.1K

Removing Your Last Exchange Server FAQ

The_Exchange_Team on Jun 01 2022 07:19 AM
In April, we released an update to the Management tools in Exchange Server 2019 that enables organizations that use Azur...
7,601

Moving from the Exchange PowerShell v1 Module to the v2 Preview

The_Exchange_Team on May 31 2022 09:28 AM
Since our recent post explaining the different versions of Exchange Online PowerShell modules, we have been asked: What’...
8,129

New Office 365 Tab Behavior in the On-premises Exchange Admin Center

The_Exchange_Team on May 23 2022 07:16 AM
With the release of Exchange Server H1 2022 CUs, we have changed the experience of Exchange hybrid customers accessing O...
15.7K

Understanding the Different Versions of Exchange Online PowerShell Modules and Basic Auth

The_Exchange_Team on May 18 2022 08:28 AM
Exchange Online PowerShell is deprecating support for Basic Authentication starting in October 2022. So, we wanted to cl...
7,725

Announcing Public Folder Migration Scripts with Modern Authentication Support

The_Exchange_Team on May 16 2022 12:13 PM
We are excited to announce that we have updated the following scripts for migrating public folders from Exchange Server ...
97.1K

Released: May 2022 Exchange Server Security Updates

The_Exchange_Team on May 10 2022 10:00 AM
We are releasing a set of security updates for Exchange Server 2013, 2016 and 2019.
18.6K

New Exchange Server Security Update and Hotfix Packaging

The_Exchange_Team on May 10 2022 09:59 AM
Today, we’re excited to announce that we have made changes in the way we deliver Security Updates (SUs) and Hotfixes (HF...
182K

Basic Authentication Deprecation in Exchange Online – May 2022 Update

The_Exchange_Team on May 03 2022 03:25 PM
In about 150 days from today, we’re going to start to turn off Basic Auth for specific protocols in Exchange Online for ...
7,556

What Happens During Archive Provisioning in Exchange Hybrid Environment

The_Exchange_Team on May 02 2022 08:31 AM
We wanted to share an in-depth look of what happens when Archives are provisioned for Exchange hybrid users and how to d...
9,177

New Reply-all Storm Protection Report, Settings UI, and Alert Policy

The_Exchange_Team on Apr 22 2022 09:49 AM
We're pleased to announce that we're rolling out three updates to the reply-all storm protection.
124K

Released: 2022 H1 Cumulative Updates for Exchange Server

The_Exchange_Team on Apr 20 2022 10:00 AM
Today we are announcing the availability of Cumulative Updates (CUs) for Exchange Server 2016 and Exchange Server 2019.
50.6K

Change in naming convention of user’s Name parameter

The_Exchange_Team on Apr 13 2022 09:05 AM
We want to inform you about a change in naming convention of user’s Name parameter that we are working on.
12.2K

Changing the behavior of MoveRequest cmdlets

The_Exchange_Team on Mar 25 2022 09:36 AM
We wanted to tell you about changing in the behavior of MoveRequest cmdlets that we are working on.
10.8K

Modernizing Dynamic Distribution Groups in Exchange Online

The_Exchange_Team on Mar 23 2022 01:38 PM
We wanted to share news related to modernization of Dynamic Distribution Groups (DDGs) in Exchange Online.
15K

Upcoming changes to license re-assignment in Exchange Online

The_Exchange_Team on Mar 21 2022 07:12 AM
We want to highlight some upcoming changes around license re-assignment in Exchange Online to help admins get clarity on...
90K

Released: March 2022 Exchange Server Security Updates

The_Exchange_Team on Mar 08 2022 10:06 AM
March 2022 Security Updates for Exchange Server 2013, Exchange Server 2016 and Exchange Server 2019 available
25.4K

The End of the REST API for On-Premises Mailboxes Preview

The_Exchange_Team on Mar 04 2022 08:00 AM
We’re announcing today that the preview program enabling REST API access to on-premises mailboxes for Hybrid Exchange or...
9,166

New Teams Exchange Integration Test in the Microsoft Remote Connectivity Analyzer

Nino Bilic on Mar 03 2022 07:33 AM
We wanted to let our Exchange hybrid customers know that there is a new Teams Exchange Integration test available in the...
8,648

Finding Transport Rule Size

The_Exchange_Team on Feb 24 2022 08:27 AM
A question we sometimes hear from Exchange Online admins is “How can I determine the size of an Exchange Transport Rule ...
7,039

Troubleshooting issues with Distribution List to Microsoft 365 Group upgrades

The_Exchange_Team on Feb 22 2022 07:18 AM
Sometimes Distribution Lists (DLs) don’t upgrade to Microsoft 365 Groups as expected and in these cases, there might be ...
8,817

SharePoint Online proxy addresses and Exchange Online mailboxes

The_Exchange_Team on Feb 16 2022 06:50 AM
What is the SharePoint Online (SPO) email address that users sometimes have? Read on!

Latest Comments

steveMUTB
in Released: August 2022 Exchange Server Security Updates on Aug 19 2022 04:10 AM
We are running Exchange 2016 CU23 with a 3 server DAG. I've just enabled Extended protection using the script after running the health check script and meeting all of the pre-requisites, but we are now getting errors in the eventlog for:MSExchange Availability EventID 4002Process 18420: ProxyWebRequ...
0 Likes
turigor
in Released: August 2022 Exchange Server Security Updates on Aug 19 2022 03:58 AM
Hello @Nino Bilic and @Lukas Sassl I have question about Windows Authentication state on virtual directories. Per table with virtual directories listed in https://microsoft.github.io/CSS-Exchange/Security/Extended-Protection/, some virtual directories should have WEP set to Allow or Required. But so...
0 Likes
MustCh
in Announcing OAuth 2.0 Client Credentials Flow support for POP and IMAP protocols in Exchange Online on Aug 19 2022 03:19 AM
I implement the OAuth 2.0 client credentials grant flow for POP3. It works fine, but only for 1 sometimes 2 or 3 hours an then not any more. The error message is “-ERR Authentication failure: unknown user name or bad password.” That is not plausible for me, because TENET ID, CLIENT ID and CLIENT SEC...
0 Likes
Lukas Sassl
in Released: August 2022 Exchange Server Security Updates on Aug 19 2022 01:58 AM
@madeyem we need a few more details about your current setup. I will drop you a PM.
0 Likes
steveMUTB
in Released: August 2022 Exchange Server Security Updates on Aug 19 2022 01:15 AM
I enabled Extended protection using the script after running the health check script and meeting all of the pre-requisites. We are running Exchange server 2016 CU23 in a 3 server DAG configuration.We are now getting connectivity errors in the eventlog for:MSExchange Availability EventID 4002Process ...
0 Likes