Recipient management is one of the most crucial tasks that admins perform. Read-only global catalog servers and read-only domain controllers are not supported. For more information, see Updates for Exchange Server. Outlook for iOS and Android fully integrates Microsoft Enterprise Mobility + Security (EMS), which enables conditional access and app protection (MAM) capabilities. A mitigation is an action or set of actions that are taken automatically to secure an Exchange server from a known threat that is being actively exploited in the wild. Each CU is a full installation of Exchange that includes updates and changes from all previous CUs, so you don't need to install any previous CUs or Exchange Server RTM first. Read more about this situation here: Understanding the Different Versions of Exchange Online PowerShell Modules and Basic Auth. Find resources for managing Exchange Online in your Office 365 environment. Exchange 2013 or later requires the version of Windows PowerShell that's included in Windows (unless otherwise specified by an Exchange Setup-enforced prerequisite rule). If a network proxy is deployed for outbound connectivity, you need to configure the InternetWebProxy parameter on the Exchange server by running the following command: In addition to outbound connectivity to the OCS, EM service needs outbound connectivity to various Certificate Revocation List (CRL) endpoints mentioned here. So if you can't migrate to Graph yet, you can switch to using Modern authentication with EWS, knowing that EWS will eventually be deprecated. Supported: Not supported for Exchange database or log files. Partition alignment refers to aligning partitions on sector boundaries for optimal performance. For more information, see Updates for version 3.0.0. The Exchange Online PowerShell module uses modern authentication and works with multi-factor authentication (MFA) for connecting to all Exchange-related PowerShell environments in Microsoft 365: Exchange Online PowerShell, Security & Compliance PowerShell, and standalone Exchange Online Protection (EOP) PowerShell. When you use one of these options, you don't need to restart the computer after the Windows components have been added. To set up Outlook Web App to access Exchange Server, follow these steps: Ask your network administrator or local HelpDesk to see If a mitigation critically affects the functionality of your Exchange server, you can block the mitigation and manually reverse it. In general, choose SSD disks for Exchange 2016 mailbox storage when you have the following design requirements: Exchange 2013 and later supports native 4 kilobyte (KB) sector disks and 512e disks when all copies of a database are on the same physical disk type. Also, in a virtualized environment, NAS storage that's presented to the guest as block-level storage via the These numbers are indicative only, and do not necessarily reflect successful access to mailboxes or data. Enabling Modern Auth for Outlook How Hard Can It Be? The new EAC offers actionable insights and includes reports for mail flow, migration, and priority monitoring. NTFS allocation unit size represents the smallest amount of disk space that can be allocated to hold a file. The timer job can take up to seven days to run and the Exchange location must contain at least 10 MB. The following table identifies the web browsers supported for the use of S/MIME together with Outlook Web App or Outlook on the web. Use the Microsoft 365 admin center for simple email and user management tasks. For more information about Modern authentication support in Office, see How modern authentication works for Office client apps. The deprecation of basic authentication will also prevent the use of app passwords with apps that don't support two-step verification. The following table identifies the version of Windows Installer that is used together with each version of Exchange. Exchange ActiveSync (EAS) Many users have mobile devices that are set up to use EAS. Use backups for log truncation (for example, circular logging disabled). This functionality is built on top of Microsoft Identity platform v2.0 and supports access to Microsoft 365 email accounts. Supported: The Windows Server 2008 R2 and Windows Server 2012 default is 1 MB. For this reason, don't allow the storage controller to automatically move the most accessed files to "faster" storage. However, individual updates or hotfixes for Exchange 2010 or earlier do not contain all previous fixes for Exchange Server. When you use one of these options, you don't need to restart the computer after the Windows components have been added. The recommended RAID configuration is either RAID-1 or RAID-1/0, however all RAID types are supported. Best practice: Consider enterprise class SATA disks, which generally have better heat, vibration, and reliability characteristics. Modern authentication displays a web-based login page: //=c.offsetWidth&&0>=c.offsetHeight)a=!1;else{d=c.getBoundingClientRect();var f=document.body;a=d.top+("pageYOffset"in window?window.pageYOffset:(document.documentElement||f.parentNode||f).scrollTop);d=d.left+("pageXOffset"in window?window.pageXOffset:(document.documentElement||f.parentNode||f).scrollLeft);f=a.toString()+","+d;b.b.hasOwnProperty(f)?a=!1:(b.b[f]=!0,a=a<=b.g.height&&d<=b.g.width)}a&&(b.a.push(e),b.c[e]=!0)}y.prototype.checkImageForCriticality=function(b){b.getBoundingClientRect&&z(this,b)};u("pagespeed.CriticalImages.checkImageForCriticality",function(b){x.checkImageForCriticality(b)});u("pagespeed.CriticalImages.checkCriticalImages",function(){A(x)});function A(b){b.b={};for(var c=["IMG","INPUT"],a=[],d=0;d with the name of the server, and then run the following command: You can use the Get-Mitigations.ps1 script to analyze and track the mitigations provided by Microsoft. ReFS maintains high degree of compatibility with NTFS while providing enhanced data verification and autocorrection techniques and an integrated end-to-end resiliency to corruptions especially when used with the storage spaces feature. Use the Microsoft 365 admin center for simple email and user management tasks. After the other Exchange servers in the organization are upgraded with the September 2021 CU (or later), only then will the EM service honor the value of MitigationsEnabled parameter. More info about Internet Explorer and Microsoft Edge, Classic and New Exchange admin center differences, Supported Browsers for Outlook on the web, Exchange admin center in Exchange Online Protection, To understand the differences between Classic and new EAC, see, To get an update on the journey of the new EAC, see. EFS enables users to encrypt individual files, folders, or entire data drives. There are other mobile device email apps that support Modern authentication. Use the EAC in Exchange Online for more complex tasks. The loss of a copy in the secondary datacenter won't result in requiring a reseed across the WAN or having a single point of failure in the event the secondary datacenter is activated. The Exchange admin center (EAC) is the web-based management console in Exchange Server that's optimized for on-premises, online, and hybrid Exchange deployments. In general, choose Serial Attached SCSI disks for Exchange 2016 mailbox storage when you have the following design requirements: Exchange 2013 and later supports native 4 kilobyte (KB) sector disks and 512e disks. A simple way to tell if a client app (for example, Outlook) is using Basic authentication or Modern authentication is to observe the dialog that's presented when the user logs in. Best practice: 64 KB for both .edb and log file volumes. Starting at the end of 2021, we started sending Message Center posts to tenants summarizing their usage of Basic authentication. Basic authentication simply means the application sends a username and password with every request, and those credentials are also often stored or saved on the device. Database per log isolation refers to placing the database file and logs from the same mailbox database on to different volumes backed by different physical disks. Exchange ActiveSync (EAS) Many users have mobile devices that are set up to use EAS. 2 Exchange 2010 uses only the .NET Framework 3.5 and the .NET Framework 3.5 SP1 libraries. Once mitigations are applied to a server, you can view the applied mitigations by replacing with the name of the server, and then running the following command: To see the list of applied mitigations for all Exchange servers in your environment, run the following command: If you accidentally reverse a mitigation, the EM service will reapply it when it performs its hourly check for new mitigations. If you are a Microsoft 365 user, click the following link to access Microsoft 365 Outlook Web App: Outlook.Office365.com. If you have a premium license, you can use the following methods to export logs: Some of the options available for each of the impacted protocols are listed below. This is expected and should not cause any problems. Supported hybrid deployment scenarios for Exchange 2016 Exchange 2016 supports hybrid deployments with Microsoft 365 or Office 365 organizations that have been upgraded to the latest version of Microsoft 365 or Office 365. Install Exchange Only devices authenticating directly using Basic authentication will be affected. The following tables identify the mail clients that are supported for use together with each version of Exchange. If your organization has an alternate means of mitigating a known threat, you might choose to disable automatic applications of mitigations. In general, choose SATA disks for Exchange 2016 mailbox storage when you have the following design requirements: Exchange 2013 and later supports native 4 kilobyte (KB) sector disks and 512e disks. Microsoft recommends using the new Exchange Admin Center, if not .NET Framework 4.8. b. Supported: Drive letter or mount point. More information can be found here: New tools to block legacy authentication in your organization - Microsoft Tech Community. How a mitigation is removed depends on the type of mitigation. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Apple iPhone/iPad/macOS: All up to date iOS/macOS devices are capable of using modern authentication, just remove and add back the account. To deploy a JBOD solution, you must deploy a minimum of three highly available database copies. Other options for sending authenticated mail include using alternative protocols, such as the Microsoft Graph API. SATA disks are available in various form factors, speeds, and capacities. With these threats and risks in mind, we're taking steps to improve data security in Exchange Online. Prepare Active Directory and domains. Install Exchange 2013 using the Setup wizard Outlook 2013 requires a setting to enable Modern authentication, but once you configure the setting, Outlook 2013 can use Modern authentication with no issues. A network-attached storage (NAS) unit is a self-contained computer connected to a network, with the sole purpose of supplying file-based data storage services to other devices on the network. Outlook for iOS and Android fully integrates Microsoft Enterprise Mobility + Security (EMS), which enables The Exchange admin center (EAC) is the web-based management console in Exchange Server that's optimized for on-premises, online, and hybrid Exchange deployments. Best practice: Mount point host volume must be RAID enabled. For example, Events 1005 and 1006 with a source of "MSExchange Mitigation Service" will be logged for successful actions such as when a mitigation is applied. Exchange ActiveSync (EAS) Many users have mobile devices that are set up to use EAS. .NET Framework 4.8. b. Supported: When using JBOD, create a single volume with separate directories for database(s) and for log files. SATA, Serial Attached SCSI, Fibre Channel, The stripe size is the per disk unit of data distribution within a RAID set. Certificate-based authentication provides admins the ability to run scripts without the need to create service-accounts or store credentials locally. IMAP is popular for Linux and education customers. Log streams per volume refer to how you distribute database log files within or across disk volumes. This includes minor and patch-level releases of the .NET Framework. Watch the following session to learn how Teams interacts with Azure Active Directory (AAD), Microsoft 365 Groups, Exchange, SharePoint and OneDrive for Business: Foundations of Microsoft Teams. The Exchange Online PowerShell module can also be used non-interactively, which enables running unattended scripts. Use multiple network paths for stand-alone configurations. On Windows Server 2012, we also recommend disabling the automatic disk optimization and defragmentation feature. Users' Exchange To get started with Exchange 2013, head for Planning and deployment. Use the EAC in Exchange Online for more complex tasks. Manage Exchange Online. OAuth 2.0 support started rolling out in April 2020. Are you using standalone Exchange Online Protection (EOP)? However, to deploy lagged copies in this manner, automatic lagged copy log file play down must be enabled. To deploy on JBOD with the primary datacenter servers, you need three or more highly available database copies within the DAG. If you're using Microsoft Intune, you might be able to change the authentication type using the email profile you push or deploy to your devices. The following tables identify the versions of the Microsoft .NET Framework that can be used with the specified versions of Exchange. Work with your vendor to update any apps or clients that you use that could be impacted. The EM service maintains a separate log file in the \V15\Logging\MitigationService folder in the Exchange Server installation directory. All storage used by Exchange for storage of Exchange data must be block-level storage because Exchange 2016 doesn't support the use of NAS volumes, other than in the SMB 3.0 scenario outlined in the article Exchange Server virtualization. Learn about solutions for Exchange hybrid environments, and how to connect Exchange Server and Office 365. Application developers who have built apps that send, read, or otherwise process email using these protocols will be able to keep the same protocol, but need to implement secure, Modern authentication experiences for their users. The Exchange Online PowerShell module uses modern authentication and works with multi-factor authentication (MFA) for connecting to all Exchange-related PowerShell environments in Microsoft 365: Exchange Online PowerShell, Security & Compliance PowerShell, and standalone Exchange Online Protection (EOP) PowerShell. How Exchange Management Shell works on Edge Transport servers. Multiple databases per volume are a new JBOD scenario available in Exchange 2016 that allows for active and passive copies (including lagged copies) to be mixed on a single disk, enabling better disk utilization. It also uses virtual disks (spaces), which behave just like physical disks, with associated powerful capabilities such as thin provisioning, and resiliency to failures of underlying physical media. Use multiple Fibre Channel network paths for stand-alone configurations. Install the following software: a. When set to $false, the EM service checks for mitigations hourly but won't automatically apply them to the specified server. It's recommended that you first investigate the impact on your tenant and users. The maximum NTFS formatted partition size is 256 terabytes. Modern authentication (OAuth 2.0 token-based authorization) has many benefits and improvements that help mitigate the issues in basic authentication. Do not confuse the fact that PowerShell requires Basic authentication enabled for WinRM (on the local machine where the session is run from). Storage System Level: Supported, but falls within the Microsoft third-party storage software solutions support policy. Using a single disk is a single point of failure, because when the disk fails, the database copy residing on that disk is lost. The Exchange Management Shell is built on Windows PowerShell technology and provides a powerful command-line interface that enables the automation of Exchange administration tasks. However, placement of three highly available database copies, and the use of lagged database copies, can affect storage design. This decision requires customers to move from apps that use basic authentication to apps that use Modern authentication. But the usage summary does indicate that something or someone is successfully authenticating to your tenant using Basic authentication. For many years, applications have used Basic authentication to connect to servers, services, and API endpoints. If Basic authentication has been disabled in your tenant and users and apps are unable to connect, you have until Dec 31, 2022, to re-enable the affected protocols. After a mitigation is removed from the blocked mitigations list, the mitigation will be reapplied by the EM service on its next run. Integrity features can be enabled for volumes containing the content index catalog, if the volume doesn't contain any databases or log files. ":"&")+"url="+encodeURIComponent(b)),f.setRequestHeader("Content-Type","application/x-www-form-urlencoded"),f.send(a))}}}function B(){var b={},c;c=document.getElementsByTagName("IMG");if(!c.length)return{};var a=c[0];if(! It replaces the Exchange Control Panel (ECP) to manage email settings for your organization. Same restrictions as for physical disk types outlined in this article. as long as the .NET Framework 3.5 or the .NET Framework 3.5 SP1 is also installed on the server. Not supported for Exchange database or log files. The goal is to store more data in less space by segmenting files into small variable-sized chunks, identifying duplicate chunks, and maintaining a single copy of each chunk. As an administrator for your organization, you manage your organization's Exchange Online service in the Exchange admin center (EAC). Storage Spaces allows you to organize physical disks into storage pools, which can be easily expanded by adding disks. Download the latest version of Exchange on the target computer. For Exchange Web Services (EWS), Remote PowerShell (RPS), POP and IMAP, and Exchange ActiveSync (EAS): Here's a table summarizing the options for proactively disabling basic authentication. If you have usage, or are unsure, take a look at the Azure AD Sign-In report. When a user attempts to change properties of a mailbox itemsuch as the subject, body, attachments, senders and recipients, or date sent or received for a messagea copy of the original item is saved to the Recoverable Items folder before the change is committed. Outlook 2007 or Outlook 2010 cannot use Modern authentication, and will eventually be unable to connect. WebExchange Online. For more information about Windows 7 BitLocker encryption, see BitLocker Drive Encryption in Windows 7: Frequently Asked Questions. Find resources for managing Exchange Online in your Office 365 environment. Exchange does not support the use of Windows Management Framework add-ons on any version of Windows PowerShell or Windows. Best practice: Data integrity features must be disabled for the Exchange database (.edb) files or the volume that hosts these files. When a user attempts to change properties of a mailbox itemsuch as the subject, body, attachments, senders and recipients, or date sent or received for a messagea copy of the original item is saved to the Recoverable Items folder before the change is committed. How Exchange Management Shell works on Edge Transport servers. Microsoft Windows 10 Mail client: Remove and add back the account, choosing Office 365 as the account type, Apple's native mail app on iOS does not currently work in Gallatin, we recommend you use Outlook mobile, Windows 10/11 Mail app is not supported with Gallatin. Best practice: Physical disk-write caching must be disabled when used without a UPS. Volume configurations for the Exchange 2016 Mailbox server role: Best practice: Mount point host volume must be RAID-enabled. You can view both applied and blocked mitigations for all Exchange servers in your organization by using the Get-ExchangeServer cmdlet. For example, it isn't a supported configuration to host one copy of a given database on a 512-byte sector disk and another copy of that same database on a 512e disk or 4K disk. Mitigation of CVE-2022-41040 via a URL Rewrite configuration. Supported: 512-byte sector disks for Windows Server 2008 and Windows Server 2008 R2. From a performance perspective, using large, slower disks for Exchange storage is okay, provided the disks can maintain an average read and write latency of 20 ms or less under load. NTFS compression is the process of reducing the actual size of a file stored on the hard disk. Once you switch to Modern authentication, the Authn column in the Outlook Connection Status dialog shows the value of Bearer. After an SU or a CU has been installed, an admin must manually remove any mitigations that are no longer needed. We actively recommend that customers adopt security strategies such as Zero Trust (Never Trust, Always Verify), or apply real-time assessment policies when users and devices access corporate information. The recommended RAID configuration for mailbox volumes is RAID-1/0 (especially if you're using 5.4 K or 7.2 K disks); however all RAID types are supported. If you are using iOS devices (iPhones and iPads) you should take a look at Add e-mail settings for iOS and iPadOS devices in Microsoft Intune. We recommend using Outlook for iOS and Android when connecting to Exchange Online. Use of Basic authentication with Exchange Online, Cisco Unity Connection Service Bulletin for Unified Messaging with Microsoft Office 365 Product Bulletin, Follow this article to migrate your customized Gallatin application to use EWS with OAuth, Automation and certificate-based authentication support for the Exchange Online PowerShell module, Follow this article to configure POP and IMAP with OAuth in Gallatin with sample code, Follow this article to configure EAS with OAuth and sample code, Autodiscover web service reference for Exchange, Manage Basic Authentication in the Microsoft 365 Admin Center (Simple), Authentication Policy Procedures in Exchange Online (Advanced), Conditional Access: Block Legacy Authentication (Simple), How to: Block Legacy Authentication to Azure AD with Conditional Access (Detailed), All versions of Outlook for Windows and Mac, Third-party applications not supporting OAuth, Azure Cloud Shell is not available in Gallatin, Third party mobile clients such as Thunderbird first party clients configured to use POP or IMAP.
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