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Exchange Team Blog

You Had Me at EHLO..

  • 1,890 Blog Articles
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2,181

New security feature in September 2021 Cumulative Update for Exchange Server

The_Exchange_Team on Sep 24 2021 11:54 AM
As part of our continued work to help you protect your Exchange Servers, in the September 2021 Cumulative Update CU we h...
20.6K

Basic Authentication and Exchange Online – September 2021 Update

The_Exchange_Team on Sep 23 2021 02:55 PM
Today, we are announcing that, effective October 1, 2022, we will begin to permanently disable Basic Auth in all tenants...
4,430

New minimum Outlook for Windows version requirements for Microsoft 365 starting November 1, 2021

Nino Bilic on Sep 20 2021 07:26 AM
Please be aware of new minimum Outlook for Windows version requirements for Microsoft 365 starting November 1, 2021.
9,151

Delay of September 2021 Cumulative Update for Exchange Server

The_Exchange_Team on Sep 17 2021 08:05 AM
We typically release Cumulative Updates (CUs) for Exchange Server on the third Tuesday of a month. In September 2021, th...
7,176

Deprecation of the classic Exchange admin center in WW service

The_Exchange_Team on Sep 09 2021 06:42 AM
We are announcing the retirement of the classic EAC in our WW deployment, to be fully deprecated by September 30, 2022.
34.9K

ProxyShell vulnerabilities and your Exchange Server

The_Exchange_Team on Aug 25 2021 10:51 AM
If you have installed the May 2021 security updates or the July 2021 security updates on your Exchange servers, then you...
18K

New opt-in endpoint available for SMTP AUTH clients still needing legacy TLS

The_Exchange_Team on Aug 18 2021 02:11 AM
Due to significant usage, we’ve created an opt-in endpoint that legacy clients can use with TLS1.0 and TLS1.1 in our sha...
9,915

Sender Rewriting Scheme Upcoming Changes

The_Exchange_Team on Aug 10 2021 09:12 AM
There are three upcoming changes in the service that will affect Sender Rewriting Scheme (SRS).
22.8K

How to update AD schema to address CVE-2021-34470 if Exchange is very old or no longer installed

The_Exchange_Team on Aug 05 2021 12:54 PM
In this blog post, we want to address how to update Exchange schema for CVE-2021-34470 even if Exchange is not installed...
19.9K

More about AMSI integration with Exchange Server

The_Exchange_Team on Jul 22 2021 07:00 AM
As of the June 2021 quarterly updates, Exchange Server supports integration with AMSI...
10.3K

Demystifying Moderation

The_Exchange_Team on Jul 20 2021 07:53 AM
Moderation is simple to setup and work with as an administrator, however if you need to troubleshoot it, you might need ...
168K

Released: July 2021 Exchange Server Security Updates

The_Exchange_Team on Jul 13 2021 10:32 AM
We are releasing a set of security updates for Exchange Server 2013, 2016 and 2019.
7,173

Google Workspace to Exchange Online migrations now support Gmail Filter to Outlook rule migration

The_Exchange_Team on Jul 06 2021 07:11 AM
We have added the capability to migrate Gmail filters to Outlook rules migration, as a part of the standard migration of...
86.5K

Released: June 2021 Quarterly Exchange Updates

The_Exchange_Team on Jun 29 2021 08:03 AM
Today we are announcing the availability of quarterly Cumulative Updates (CUs) for Exchange Server 2016 and Exchange Ser...
45.5K

Basic Authentication and Exchange Online – June 2021 Update

The_Exchange_Team on Jun 16 2021 01:08 PM
It’s been a few months since our last update on Basic Authentication in Exchange Online, but we’ve been busy getting rea...
9,068

Did you know? Automated diagnostics are available to troubleshoot various Office 365 issues.

Nino Bilic on Jun 15 2021 11:37 AM
I wanted to share information about automated diagnostics that our customers can run inside of the Microsoft 365 admin c...
28.1K

News About the June 2021 Cumulative Update for Exchange Server

The_Exchange_Team on Jun 11 2021 08:40 AM
We typically release our quarterly CUs for Exchange Server on the third Tuesday of a month. In June 2021, that would be ...
13.3K

Migrations with Data Consistency Score (DCS) – more than you ever wanted to know!

The_Exchange_Team on May 27 2021 01:37 PM
We wanted to provide a lot of detail of what makes Data Consistency Score (DCS) Exchange Online migrations work, how to ...
15K

Outlook for Windows Shared Calendar Public Notifications

The_Exchange_Team on May 26 2021 01:16 PM
It is with great excitement that we are announcing that we have graduated the shared calendar improvements in Outlook fo...
9,590

Prevent Journaling issues due to Exchange Online mailbox receiving limits

Scott Schnoll on May 13 2021 03:45 PM
As part of our continued efforts to help customers be successful with Exchange Online, Microsoft has detected that some ...
82.4K

Released: May 2021 Exchange Server Security Updates

The_Exchange_Team on May 11 2021 09:54 AM
We are releasing a set of security updates for Exchange Server 2013, 2016 and 2019.
7,217

Troubleshooting Legacy Public Folder Migration Endpoints in Office 365

The_Exchange_Team on May 06 2021 10:59 AM
In this blog post, we discuss issues when creating public folder migration endpoints for Exchange 2010 on-premises publi...
9,628

Reply All Storm Protection Customizable Settings

The_Exchange_Team on May 05 2021 12:28 PM
Last year we released the Reply-all Storm Protection feature to help protect your organization from unwanted reply-all s...
12.8K

Loop Prevention in Exchange Online Demystified

The_Exchange_Team on May 03 2021 06:45 AM
With this blog post we will give you an overview of how we handle possible mail loop scenarios in Exchange Online and ho...
17.7K

Exchange Health Checker has a new home

The_Exchange_Team on Apr 29 2021 06:20 AM
We wanted to give you an update on Exchange Health Checker script.
20.4K

Announcing General Availability of the new Exchange admin center

Scott Schnoll on Apr 27 2021 08:35 PM
Today, we are excited to announce that the new EAC is now generally available for customers (including GCC customers) in...
11.6K

Why Exchange Server updates matter

The_Exchange_Team on Apr 26 2021 03:00 AM
Why does it matter if you keep your Exchange Server updated, or not? What does it mean to be on a 'supported version' of...
22.5K

Enabling Modern Auth for Outlook – How Hard Can It Be?

The_Exchange_Team on Apr 19 2021 01:52 PM
Modern Authentication, based on OAuth2, has a lot of advantages and benefits as we have covered before, and we’ve yet to...
373K

Released: April 2021 Exchange Server Security Updates

The_Exchange_Team on Apr 13 2021 10:01 AM
We are releasing a set of security updates for Exchange Server 2013, 2016 and 2019.
50K

Native external sender callouts on email in Outlook

The_Exchange_Team on Apr 02 2021 06:20 AM
We know that some of our customers leverage Exchange transport rules to prepend subject line or insert the message body ...

Latest Comments

jordanl17
in Delay of September 2021 Cumulative Update for Exchange Server on Sep 24 2021 06:06 PM
Will going from 2016 CU19 to CU22 be supported? At this point I will wait until CU22, no need for me to go to CU21 as I have the key SUs installed.
0 Likes
Fernando Gualano
in Troubleshooting IMAP Migrations to Office 365 on Sep 24 2021 05:40 PM
Hi @Mirela_Buru! Thank you for your post!I am migrating to EXO through IMAP migration. I created a Migration Batch with a single mailbox. Then, I checked the status: it was Synced. The IMAP Source Mailbox has 3000 items. However, I checked that only 2 items were synced. Therefore, I removed the Migr...
0 Likes
kwester-ebbinghaus-business
in Basic Authentication and Exchange Online – September 2021 Update on Sep 24 2021 04:02 PM
@The_Exchange_Team just in time, have you heard about this publication on Autodiscover and how easy it was to use autodiscover.com.anyTLD to phish for BASIC authentication?I am not a sec expert but I hope that this measure will at least be one part of the puzzle.
0 Likes
HSI2020
in Basic Authentication and Exchange Online – September 2021 Update on Sep 24 2021 02:33 PM
@DoveFromAbove All these clients support modern authentication:Outlook 2013 or later (Outlook 2013 requires a registry key change. See Enable Modern Authentication for Office 2013 on Windows devices for more information.)Outlook 2016 for Mac or laterOutlook for iOS and AndroidMail for iOS 11.3.1 or ...
3 Likes
RyanWalker
in Basic Authentication and Exchange Online – September 2021 Update on Sep 24 2021 02:07 PM
@Mike Crowley, yes that's the client-side setup I'm referring to. I just saw that Basic Auth was being disabled and remember seeing the warning message that I referenced above almost every day when I run my scripts from the wrong client. Wanted to make sure that Microsoft wasn't requiring mutually e...
1 Likes