Exchange Team Blog

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The_Exchange_Team on 03-02-2021 01:08 PM

We are releasing a set of out of band security updates for Exchange Server.

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The_Exchange_Team on 02-25-2021 10:14 AM

We would like to have Exchange Online customers (who would like to participate in a preview program) help us improve the...

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The_Exchange_Team on 02-22-2021 07:03 AM

To ensure optimal mail flow performance for all customers and protect the health of Exchange services, Microsoft is upda...

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The_Exchange_Team on 02-11-2021 07:26 AM

At Microsoft Ignite 2020, we announced the preview of support for Linux and Windows PowerShell Core in Exchange Online m...

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The_Exchange_Team on 02-04-2021 09:00 AM

We previously announced we would begin to disable Basic Auth for five Exchange Online protocols in the second half of 20...

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The_Exchange_Team on 02-03-2021 08:10 AM

A redirect URI, or Reply-URL, is where an authorization server sends a user once their app has been successfully authori...

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The_Exchange_Team on 02-02-2021 08:56 AM

Administrators who want to limit the app access to a specific set of mailboxes can create an application access policy. ...

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The_Exchange_Team on 01-22-2021 03:03 PM

Microsoft periodically refreshes certificates in Office 365 as part of our effort to maintain a highly available and sec...

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The_Exchange_Team on 01-21-2021 11:37 AM

Continuing on our path to release the new EAC, we wanted to tell you that the Groups feature is now available and what t...

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The_Exchange_Team on 01-19-2021 08:50 AM

It is important for administrators to know of all mailboxes that have forwarding enabled and where the mail is been forw...

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The_Exchange_Team on 01-15-2021 09:23 AM

With the deprecation and disablement of TLS 1.0/1.1. we thought to share some information on what behaviors you might se...

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The_Exchange_Team on 01-11-2021 01:32 PM

In Exchange Online we automatically perform certain public folder mailbox management so you may focus your time managing...

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The_Exchange_Team on 12-15-2020 08:37 AM

Today we are announcing the availability of quarterly servicing cumulative updates for Exchange Server 2016 and 2019.

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The_Exchange_Team on 11-19-2020 10:33 AM

We wanted to share some best practices to prepare the on-premises public folders for migration to Exchange Online

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The_Exchange_Team on 11-17-2020 03:29 PM

Today we are announcing the deprecation of the Outlook REST API beta and Outlook REST API v2.0 and that they will be dec...

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The_Exchange_Team on 10-29-2020 09:23 AM

In this installment of the migration troubleshooting series, we will talk about migrations that are 'Completed with warn...

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The_Exchange_Team on 10-27-2020 12:59 PM

As was announced at Microsoft Ignite 2020, support for plus addressing is now available in Exchange Online. Thanks to ou...

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The_Exchange_Team on 10-22-2020 11:34 PM

Microsoft is updating Azure services to use TLS certificates from a different set of Root Certificate Authorities (CAs)....

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The_Exchange_Team on 10-19-2020 07:37 AM

In this part of migration troubleshooting series, we will talk about ‘slow’ migrations (and how to define when a migrati...

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The_Exchange_Team on 10-16-2020 11:16 AM

Virtual desktop infrastructure (VDI) is defined as the hosting of desktop environments on a central server. It is a form...

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The_Exchange_Team on 10-07-2020 06:32 AM

We're thrilled to announce that our Microsoft Remote Connectivity Analyzer - Office 365 tests now have modern authentica...

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The_Exchange_Team on 10-05-2020 11:34 AM

Continuing our hybrid migration blog post series, we arrived at troubleshooting failed migrations.

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The_Exchange_Team on 09-22-2020 08:01 AM

Lots of Exchange related news announced today at Microsoft Ignite 2020.

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The_Exchange_Team on 09-22-2020 08:00 AM

When Microsoft Ignite 2020 become a digital event we took it as an opportunity to think about the sessions and subjects ...

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The_Exchange_Team on 09-22-2020 08:00 AM

Email and time management seems pretty simple, doesn’t it? How do you know what’s really happening as messages pass from...

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The_Exchange_Team on 09-22-2020 08:00 AM

Today we are announcing several new features and capabilities to help Exchange admins become more efficient and achieve ...

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The_Exchange_Team on 09-22-2020 08:00 AM

At Microsoft Ignite 2020 the Exchange Online Transport team is announcing a variety of updates across the areas of Secur...

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The_Exchange_Team on 09-22-2020 08:00 AM

Today we are happy to announce an update to the Exchange Hybrid Configuration Wizard (HCW) which enables either a Full o...

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The_Exchange_Team on 09-16-2020 12:32 PM

Let’s talk about migration move reports. We will need this knowledge when we get to later parts of hybrid migration blog...

40.8K

The_Exchange_Team on 09-15-2020 07:00 AM

Today we are announcing the availability of quarterly servicing cumulative updates for Exchange Server 2016 and 2019.

Latest Comments

in Released: March 2021 Exchange Server Security Updates on 03-07-2021

Do you prepare to release an update for CU 16 in the future? because we could not update CU easily. Many jobs to be done...

0 Likes

in Released: March 2021 Exchange Server Security Updates on 03-07-2021

We are seeing HTTP status code 241 in IIS logs taken from compromised Exchange servers - is this something that anyone else has noticed or is there someone at Microsoft who can collaborate this unusual code appearing in logs?

0 Likes

in Released: March 2021 Exchange Server Security Updates on 03-07-2021

@Nino Bilic Thanks Nino. I saw that and just ran it this morning. Came back clean. So I feel based on the information we have up to this point we were very lucky. Do you think it can be said with reasonable confidence that if all you found were Autodiscover log entries and MSERT did not find anythin...

0 Likes

in Released: March 2021 Exchange Server Security Updates on 03-06-2021

@JamesTechnet - FYI, there is a new development that can help here (with remediation): the MSTIC team has updated their post about March vulnerabilities (scroll all the way down) to mention that the Microsoft Safety Scanner - MSERT tool has been updated to scan Exchange server.

1 Likes

in Released: March 2021 Exchange Server Security Updates on 03-06-2021

Hey everyone, Regarding folks who only saw autodiscover attempts for the administrator email (myself included), I made a poll on Reddit to try to gather more info to see if everyone who had further signs of compromise such as webshells being dropped actually had an active administrator account. If y...

0 Likes