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Exchange Team Blog

You Had Me at EHLO..

  • 1,890 Blog Articles
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11.8K

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...
26.4K

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...
4,807

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.
9,695

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...
7,365

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.
35.2K

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...
18.2K

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...
9,948

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).
22.9K

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...
20K

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...
10.4K

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.
7,181

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...
86.9K

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...
46.8K

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...
9,092

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...
9,606

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 ...
82.5K

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.
7,229

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...
9,642

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...
12.9K

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...
22.6K

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.
50.1K

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

Kevin_Hamilton
in Basic Authentication and Exchange Online – September 2021 Update on Sep 26 2021 07:20 PM
The FAQs state that "the Azure AD Sign-In log" can inform an administrator if there are existing uses of Basic Auth in the tenant. However, it does not indicate how you do that. How do I do that? Looking at the Azure AD Sign-in log, I don't see any obvious fields being reported that indicate if Basi...
0 Likes
Duncan1528
in Delay of September 2021 Cumulative Update for Exchange Server on Sep 26 2021 03:44 PM
"If you are on Exchange 2016 or Exchange 2019 and not yet running the June 2021 CU, you should install it now." We are running CU20 with Jul21SU... - does this mean, we must install CU21 first to get CU22 - or is it possible to go directly from CU20/Jul21SU to CU22?
0 Likes
ExchangeOnline
in Basic Authentication and Exchange Online – September 2021 Update on Sep 26 2021 02:55 PM
@Greg Taylor - EXCHANGE we are familiar with the alternatives, but as you know POP, by default, removes the downloaded messages from the server.The consequence of forcing Modern Auth means that POP/IMAP on Exchange Online with Outlook cannot be used anymore, that would be very dissapointing.
0 Likes
Greg Taylor - EXCHANGE
in Basic Authentication and Exchange Online – September 2021 Update on Sep 26 2021 09:12 AM
@ExchangeOnline Why does a 'security requirement' determine the protocol that has to be used? Why POP? Why not IMAP? or EWS? or MAPI? If this is an app, use EWS, or even better, REST/Graph.
0 Likes
ExchangeOnline
in Basic Authentication and Exchange Online – September 2021 Update on Sep 26 2021 02:12 AM
@Greg Taylor - EXCHANGE For some mailboxes there is a security requirement to immediately dowload the messages using POP.Modern Auth in Exchange Online is available for POP, why not allowing it to use with Outlook?
0 Likes