Exchange Server 2019 is the most recent release of the successful email messaging solution, introduced by Microsoft in 1996. Since the early days of the product supported a single primary email address only. The primary email address is used as the sender address when a user composes a new email message and sends the message. A mailbox can have multiple email addresses to receive messages for, but only one so-called reply-address.
But the limitation is not valid anymore.
A recent build of the Exchange Server 2019 Cumulative Update 1 released to VLSC contains a new feature called Multi-Reply Addresses.
This new feature is very helpful in scenarios where a single user sends email messages for multiple companies. Think of a business owner who is responsible for two or more companies. In the past, it was required to configure a mailbox account per primary email address used as a reply address. Such a configuration resulted not only on multiple inboxes but in multiple calendars and contact folders as well.
The new Multi-Reply Addresses feature of Exchange Server 2019 provides a much better solution. Moreover, it is a CEO-safe solution.
After enabling the multi-reply feature in your Exchange Organization the new functionality is available in Exchange Admin Center and Exchange Management Shell.
When you edit the email address properties using the Edit User Mailbox dialogue of an existing mailbox you can add additional reply addresses.
The following screenshot illustrates the steps.
When you close the Edit User Mailbox dialogue the additonal reply addresses and the status are displayed in the recipient list view and the detail pane.
The following screenhot shows how the reply addresses are displayed in the list view and how the status is displyed in the detail pane.
You can verify the updated proxyAddresses Active Directory attibute using ADSIEdit or the Attribute Viewer of the ADUC MMC.
When you compose a new email message using Outlook on the Web, the From selector is displayed automatically. You can select one of the configured reply email addresses as the sender address.
You can configure separate email signatures for each available reply address.
A user can select Options - Mail - Email signature to open the Email signature form. The form provides a new option to set a different email siganture for each reply address.
This is a really exciting new feature.
You can enable the new multi-reply function using the following new Exchange Cmdlet:
# Enable Multi-Reply functionality in Exchange Server 2019 Enable-SmtpMultiReply # Disable Multi-Reply functionality in Exchange Server 2019 Disable-SmtpMultiReply -CleanupPrimarySmtp -Force
When disabling the Multi-Reply feature a all but one primary SMTP address is converted to a legacy proxy smtp address.
You need to be assigned permissions before you can run this cmdlet. It is required to be assigned to the Elevated Exchange Organization Management role.
I do not know if the new feature had been exposed accidentally, but the on-premises version of the Exchange Server 2019 benefits from this new feature. This is a true differentiator to the cloud-based service of Exchange Online.
Enjoy Exchange Server 2019!
The use of Exchange Edge Transport Servers requires the synchronization of user and configuration data from internal Exchange Servers to the Edge Transport Servers. The synchronization utilizes secure LDAP (EdgeSync) to transmit the data securely and is based on an Edge Subscription.
When you create a new Edge Subscription on your internal Exchange Servers by importing the Edge Subscription XML-file, establishing the EdgeSync-connection might fail.
You will find the following error in the application event log of the internal Exchange Server:
Log Name: Application Source: MSExchange EdgeSync Event ID: 1035 Task Category: Synchronization Level: Error Keywords: Classic Description: EdgeSync failed to synchronize because it only supports Cryptographic API certificates. The local Hub Transport server's default certificate with thumbprint XYZ isn't a CAPI certificate. To set a CAPI certificate as the default certificate, use the Enable-ExchangeCertificate cmdlet with the Services parameter using the value of SMTP.
The private key of the current Exchange Transport default certificate of the internal Exchange servers uses a CNG private key. EdgeSync requires a CAPI1 based private key.
This problem occurs primarily when using an Enterprise Certificate Authority using certificate templates with individual template settings.
Get-TransportService | ft Name,InternalTransportCertificateThumbprint
certutil -v -store my > cert.txt
If both attribute are of the value 0, the certificate if a CNG certificate.
The section might look like this:
Unique container name: XYZ Provider = Microsoft Software Key Storage Provider ProviderType = 0 Flags = 20 (32) CRYPT_MACHINE_KEYSET -- 20 (32) KeySpec = 0 -- XCN_AT_NONE
Use OpenSSL to convert the CNG certificate to a CAPI1 certificate.
Using OpenSSL requires the download of the Windows release of OpenSSL. I recommend to not install the software on the Exchange Server but a separate Windows server or your administrative desktop system. Additionally, you need the certificate with its private key as a PFX-file.
Use the following steps to convert the CNG certificate to a CAPI1 certificate.
openssl pkcs12 -in CERT.pfx -out cert.pem -nodes
openssl pkcs12 -export -in cert.pem -out NEWCERT.pfx
The new PFX-file is now a CAPI1 certificate. The new certificate has the same thumbprint. Now you must replace the current certificate used by Exchange Server with the new certificate.
Replacing the certificate requires a downtime of each Exchange Server requiring the certificate replacement. This is due to the requirement to remove the CNG certificate first, following the import of the CAPI1 certificate. Afterward, you need to enable the required Exchange services.
Get-ExchangeCertificate -Server SERVERNAME
# It is mandatory to answer the query for replacing the default certificate with YES Enable-ExchangeCertificate -Thumbprint THUMBPRINT -Services SMTP # Restart the transport service Restart-Service MSExchangeTransport
# It is mandatory to answer the query for replacing the default certificate with YES Enable-ExchangeCertificate -Thumbprint NEWCERTTHUMBPRINT -Services SMTP # Restart the transport service Restart-Service MSExchangeTransport
Now, that you updated the local Exchange Servers there is one more step that needs to be checked on the Edge Transport Servers.
Edge Transport Servers are not domain-joined and therefore do not receive any GPO-based configuration. Each required configuration must be performed locally. To ensure that the default transport certificate of the internal Exchange servers can be used for cryptographic operations we must ensure that the certificate chain of that certificate is present in the certificate store of Edge Transport servers.
Take a look at the certificate chain of the converted CAPI1 certificate and import the Root-CA and Subordinate-CA certificates into the Edge Transport servers local certificate store. You must ensure that the certificates are placed into appropriate stores:
Next, you create a new Edge Subscription on your Edge Transport server and create a new subscription for the Active Directory site on the internal Exchange Server. The internal Exchange Servers are now able to establish an EdgeSync connection and encrypting the data transferred to the Edge Transport servers.
When you receive the TLS certificate as PFX/PKCS12 file, you import the certificate and the private key. The import process itself defines the priavte key Crypto Provider. Using the following command line you ensure that the import process suses the legacy crypto provider.
certutil -csp "Microsoft RSA SChannel Cryptographic Provider" -importpfx my MYCERTpfx
Enjoy Exchange Server and Edge Transport!
Are you located in Germany, Austria, or Switzerland? Join the Exchange User Group DACH to collaborate with other Exchange enthusiasts. Follow us on Twitter @exusg, join on Meetup, or visit our website.
You are not able to list public folders in a co-existence scenario with Exchange Server 2007 and Exchange Server 2010/2013 using the Exchange 2007 EMS or EMC.
When you try to execute Get-PublicFolder you receive the following error:
Get-PublicFolder " There is no existing PublicFolder that matches the following Identity: '\'. Please make sure that you specified the correct PublicFolder Identity and that you have the necessary permissions to view PublicFolder.
This might happen after you have removed the first Exchange 2007 mailbox server, but not the last Exchange 2007 mailbox server.
Exchange Server 2007 uses the Exchange System Attendant to access the public folder store and fails if the System Attendant discovery in Active Directory does not provide a proper configuration.
KB 2621350 describes the discovery process:
There two annoying things about these steps
The magic System Attendant mailbox has been removed from Exchange 2010. But the System Attendent configuration node does still exist in the Active Directory Configuration Partition for compatibility reasons. The configured attributes of the System Attendant entry vary depending on the version of the installed Exchange Server.
In regards to the public folder issue, we need to focus on the following:
To fix the public folder access issue for Exchange Server 2007, set the homeMDB and homeMTA attributes. Set the Exchange System Attendant attributes to appropriate values for your Exchange servers.
Repeat steps 4 to 8 for each Exchange 2013 server in your environment.
Repeat steps 4 to 13 for each Exchange 2010 server in your environment.
Wait for Active Directory replication and retry to access the public folders using Get-PublicFolder in an Exchange Server 2007 Management Shell.
It might be required to restart the Exchange 2007 Information Store and System Attendant service of the Exchange 2007 server in question
Use an administrative PowerShell
Restart-Service MSExchangeIS Restart-Service MSExchangeSA
I haven’t noticed any issues in production environments so far. If you encounter any issues in your environment, feel free to leave a comment.
Do you need assistance with your Exchange Server setup? You have questions about your Exchange Server infrastructure and going hybrid? You are interested in what Exchange Server 2016 has to offer for your environment?
Contact me at thomas@mcsmemail.de Follow at https://twitter.com/stensitzki
Exchange Server 2016 introduced the PowerShell cmdlet Get-MailboxServerRedundancy. This cmdlet helps you plan and prepare for Exchange Server maintenance by querying the current maintenance readiness of the database availability group (DAG).
Interestingly, there is no PowerShell help available for this vital cmdlet. Microsoft Docs or Exchange Management Shell's Get-Help provide any valuable information.
When querying a DAG about the server redundancy status, the cmdlet's default output provides you with the essential information.
The default output contains information about:
This example shows the Get-MailboxServerRedundancy output of a six server DAG, before activating maintenance mode for server LOCEXS06.
Get-MailboxServerRedundancy -DatabaseAvailabilityGroup EXDAG01 Identity IsServerFound IsInMainten RepairUrgency SafeForMaintenance HealthInfoLastUpdateTime InAD ance -------- ------------- ----------- ------------- ------------------ ------------------------ LOCEXS01 True False Prohibited False 17.02.2020 09:10:11 LOCEXS02 True False Normal True 17.02.2020 09:10:11 LOCEXS03 True False Normal True 17.02.2020 09:10:11 LOCEXS06 True False Normal True 17.02.2020 09:10:11 LOCEXS05 True False Normal True 17.02.2020 09:10:11 LOCEXS04 True False Prohibited False 17.02.2020 09:10:11
As Exchange Administrator, you are most interested in the information displayed in columns RepairUrgency and SafeForMaintenance.
As you can see in this screenshot, no server is in maintenance mode. Servers S01 and S04 have a RepairUrgency state of Prohibited, and a SafeForMaintenance state of False. The latter tells us that we cannot activate maintenance mode for servers safely without risking mailbox database redundancy.
What is the reason for this? Let's have a look.
You can use the same cmdlet to query detailed information for each member server of the DAG. The default output for a single server does not provide any additional information on the server status.
Get-MailboxServerRedundancy -DatabaseAvailabilityGroup EXDAG01 -Identity LOCEXS01 Identity IsServerFound IsInMainten RepairUrgency SafeForMaintenance HealthInfoLastUpdateTime InAD ance -------- ------------- ----------- ------------- ------------------ ------------------------ LOCEXS01 True False Prohibited False 17.02.2020 09:11:11
Because we cannot activate maintenance mode for server LOCEXS01 safely, we are interested in identifying which redundancy state is responsible.
You can find this information by displaying the detailed server information.
Use the Format-List, or short FL, cmdlet to display the Get-MailboxServerRedundancy cmdlet output as a formatted list.
Get-MailboxServerRedundancy -DatabaseAvailabilityGroup EXDAG01 -Identity LOCEXS01 | FL RunspaceId : 70d82f8d-e6ca-4bfc-863f-11300a9784ff Identity : LOCEXS01 IsServerFoundInAD : True IsInMaintenance : False RepairUrgency : Prohibited SafeForMaintenance : False ServerContactedFqdn : LOCEXS04.VARUNAGROUP.DE HealthInfoCreateTime : 15.06.2018 15:16:19 HealthInfoLastUpdateTime : 17.02.2020 09:11:11 ServerFoundInAD : CurrentState: Active; LastActiveTransition: 15.06.2018 15:22:16; LastInactiveTransition: InMaintenance : CurrentState: Inactive; LastActiveTransition: 17.01.2020 09:07:02; LastInactiveTransition: 17.01.2020 10:42:02 AutoActivationPolicyBlocked : CurrentState: Inactive; LastActiveTransition: 09.01.2020 10:14:50; LastInactiveTransition: 09.01.2020 11:00:51 ActivationDisabledAndMoveNow : CurrentState: Inactive; LastActiveTransition: ; LastInactiveTransition: 15.06.2018 15:22:16 HighAvailabilityComponentStateOffline : CurrentState: Inactive; LastActiveTransition: 17.01.2020 09:07:02; LastInactiveTransition: 17.01.2020 10:42:02 CriticalForMaintainingAvailability : CurrentState: Inactive; LastActiveTransition: 31.01.2020 16:52:49; LastInactiveTransition: 31.01.2020 16:56:49 CriticalForMaintainingRedundancy : CurrentState: Active; LastActiveTransition: 29.01.2020 11:43:06; LastInactiveTransition: 29.01.2020 11:42:06 PotentiallyCriticalForMaintainingRedundancy : CurrentState: Active; LastActiveTransition: 01.02.2020 05:49:37; LastInactiveTransition: CriticalForRestoringAvailability : CurrentState: Inactive; LastActiveTransition: 06.05.2019 09:16:36; LastInactiveTransition: 06.05.2019 09:20:36 CriticalForRestoringRedundancy : CurrentState: Inactive; LastActiveTransition: 29.01.2020 11:42:06; LastInactiveTransition: 29.01.2020 11:43:06 HighForRestoringAvailability : CurrentState: Inactive; LastActiveTransition: 29.01.2020 11:42:06; LastInactiveTransition: 29.01.2020 11:43:06 HighForRestoringRedundancy : CurrentState: Inactive; LastActiveTransition: 10.02.2020 09:05:02; LastInactiveTransition: 10.02.2020 09:06:02 IsSafeForMaintenance : CurrentState: Inactive; LastActiveTransition: 03.11.2019 09:42:35; LastInactiveTransition: 12.11.2019 06:29:58 IsValid : True ObjectState : Unchanged
The lines 24-27 show the information we want to know. Both, the CriticalForMaintainingRedundancy and PotentiallyCriticalForMaintainingRedundancy parameters have a CurrentState value of Active. The Primary Activation Manager (PAM) considers the server availability critical to provide redundant availability of the database copies hosted by this server.
Each of state-parameter shows three pieces of information:
But there is still the bothering question of why are two of the six servers not safe for activating maintenance?
The reason is simple. The mailbox databases mounted by the member servers of the DAG have a different number of database copies. This configuration is due to data storage capacity constraints.
The mailbox databases storing primary user mailboxes use four database copies per database. Those copies are evenly distributed across all six mailbox servers. Mailbox database storing online archive mailboxes use three copies per database. This database copy layout allows for safely activating server maintenance for one server at a time without risk to database redundancy.
The servers LOCEXS01 and LOCEXS04 hold mailbox databases with just two copies per configured database. Placing one of those two servers into maintenance mode reduces the database availability for these mailbox databases to one. Therefore, PAM informs us that database redundancy is at risk when activating maintenance for those two servers.
This example shows the member server redundancy state while LOCEXS06 is in maintenance. The reason for monthly maintenance for installing Windows updates.
Maintenance was activated using the StartDagServerMaintenance.ps1 PowerShell script.
Get-MailboxServerRedundancy -DatabaseAvailabilityGroup indag01 Identity IsServerFound IsInMainten RepairUrgency SafeForMaintenance HealthInfoLastUpdateTime InAD ance -------- ------------- ----------- ------------- ------------------ ------------------------ LOCEXS01 True False Prohibited False 17.02.2020 11:04:12 LOCEXS02 True False Normal True 17.02.2020 11:04:12 LOCEXS03 True False Prohibited False 17.02.2020 11:04:12 LOCEXS06 True True High True 17.02.2020 11:04:12 LOCEXS05 True False Prohibited False 17.02.2020 11:04:12 LOCEXS04 True False Prohibited False 17.02.2020 11:04:12
Having a single server in maintenance has a significant impact on all other servers in the DAG. The servers LOCEXS03 and LOCEXS05 are not safe for maintenance as well. Activating maintenance for those two servers would affect the database redundancy for the databases hosted by those two servers.
After completing all maintenance tasks, e.g., installing Windows Updates or a new Exchange Server Cumulative Update, you end server maintenance using the PowerShell script StopDagServerMaintenance.ps1.
We query the server redundancy state again.
Get-MailboxServerRedundancy -DatabaseAvailabilityGroup indag01 Identity IsServerFound IsInMainten RepairUrgency SafeForMaintenance HealthInfoLastUpdateTime InAD ance -------- ------------- ----------- ------------- ------------------ ------------------------ LOCEXS01 True False Prohibited False 17.02.2020 11:23:12 LOCEXS02 True False Normal True 17.02.2020 11:23:12 LOCEXS03 True False Normal True 17.02.2020 11:23:12 LOCEXS06 True False High True 17.02.2020 11:23:12 LOCEXS05 True False Normal True 17.02.2020 11:23:12 LOCEXS04 True False Prohibited False 17.02.2020 11:23:12
Server LOCEXS06 is not in maintenance, but the RepairUrgency state is High. The local Exchange Server replication engine is still busy replicating and processing log files, and updating the search indices. When CopyQueueLength and ReplayQueueLength are back to 0, and ContentIndexStates are back to Healthy, the RepairUrgency switches to Normal.
You receive an error message when activating maintenance for an Exchange Server not safe for maintenance using StartDagServerMaintenance.ps1 -serverName [SERVER] In this case, you must use:
.\StartDagServerMaintenance.ps1 -serverName SERVERNAME -overrideMinimumTwoCopies:$true
Enjoy Exchange Server!
The Exchange Server product used the Extensible Storage Engine (ESE, aka JET Blue) to store data for decades. The story of the JET Blue (in contrast to JET Red which is used for Access database) can be read here (https://en.wikipedia.org/wiki/Microsoft_Jet_Database_Engine). In the acient days of data storage the ESE database was the best choice for storing mostly unstructured data with many dynamic properties.
The Messaging API (MAPI) had been developed in the 1990s to provide programmers with a set of unified interface for easier message exchange. The MAPI documentation at TechNet has been replaced by the current Outlook 2013 MAPI Reference. In todays world it is not easy to find reliable ressource about the original MAPI implementation. The only printed resource is Inside Mapi (Microsoft Programming Series) , ISBN 978-1572313125 , which has been published in 1996.
At Ignite 2015 Ross Smith VI joked about moving the Exchange storage engine to SQL. Back in the day with Exchange 2013 in production and Exchange 2016 coming, this was true. But Ross laid the tracks for the evolution of Exchange.
But it seems that the Exchange Product Team realized that in today's world with heavily standardized communication and less dynamic requirements than in the 1990s the days of JET blue are over. At the same time SQL Server evolved to mature database solution, capable of handling big data. The question was, if it can store SharePoint data, why not Exchange data. After twenty years of Exchange Server using the good ole ESE engine it was time to move on.
The SQL scripts that are used by Exchange to configure SQL are loacted in $exbin\SQL
CREATE TABLE [dbo].[MAPI_PROPERTIES]( [MAPI_PROPERTTY_ID] [int] IDENTITY(1,1) NOT NULL, [MAPI_PROPERTY_NAME] [nchar](127) NOT NULL, [IsWellKnownProperty] [bit] NOT NULL, [MAPI_TYPE_ID] [int] NOT NULL, CONSTRAINT [PK_MAPI_PROPERTIES] PRIMARY KEY CLUSTERED ( [MAPI_PROPERTTY_ID] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY] GO ALTER TABLE [dbo].[MAPI_PROPERTIES] WITH CHECK ADD CONSTRAINT [FK_MAPI_PROPERTIES_MAPI_TYPES] FOREIGN KEY([MAPI_TYPE_ID]) REFERENCES [dbo].[MAPI_TYPES] ([MAPI_TYPE_ID]) GO ALTER TABLE [dbo].[MAPI_PROPERTIES] CHECK CONSTRAINT [FK_MAPI_PROPERTIES_MAPI_TYPES] GO
The current Exchange 2016 CU2 Preview supports an undocumented registry key to activate SQL Server support for Exchange. Personally I do not know, if this was supposed to be officially included in a public realease. So maybe the SQL support was made available by error and is already removed from the most current build again.
The famous SqueakyLobster registry key in has been used in Exchange 5.5 to troubleshoot performance issues. The new "Lobster" key is used to activate hidden code in Exchange Server product. The name of the key is LobsterMapiDB.
This key activates support for Exchange modern storage. Without this key you won't be able to move mailboxes from ESE legacy storage to SQL modern storage.
It is assumed that a SQL Server 2014 instance is available. A SQL Server 2014 Express edition is sufficient for testing purposes.
Note: Any changes to configurations or the registry should be validated in a test environment first. Never try this in production right away.
The high level steps required to activate SQL support for Exchange 2016 are:
The detailed steps are:
<?xml version="1.0" encoding="utf-8" ?> <!-- Exchange SQL Configuration - preliminary support --> <!-- %MAILBOXDATABASENAME% will be replaced by Exchange --> <!-- More information https://goo.gl/QiTtDo --> <configuration> <sectionGroup name="SqlMapiProviderGroup" type="Microsoft.Exchange.Data.SQL.SqlMapiProviderGroup, Microsoft.Exchange.Data.Common, Version=15.2.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"> <section name="SqlMapiProviderSection" type="Microsoft.Exchange.Data.SQL.SqlMapiProviderGroup, Microsoft.Exchange.Data.Common, Version=15.2.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" /> </sectionGroup> <runtime> <gcServer enabled="True" /> <generatePublisherEvidence="False" /> </runtime> <appSettings> <add key="MigrateMailboxesAutomatically" value="false" /> <!-- Not yet supported --> <add key="AllowJETBlueCoexistence" value="true" /> <!-- Allows for SQL/ESE Coexistence in DAG --> <add key="PerDatabaseMaxSize" value="1GB" /> <add key="VerboseLoggingEnabled" value="False" /> </appSettings> <SqlMapiProviderSection> <SqlMapiProvider> <add name="LobsterMapiDB" providerName="System.Data.SqlClient" connectionString="Data Source=SERVERNAME\INSTANCE;Initial Catalog=%MAILBOXDATABASENAME%;Integrated Security=True;MultipleActiveResultSets=True" /> </SqlMapiProvider> </SqlMapiProviderSection> </configuration>
CREATE LOGIN [DOMAIN\Exchange Trusted Subsystem] FROM WINDOWS
More can be found here:
Enjoy Exchange for the next 20 years...
This script copies a single receive connector from a source Exchange Server to a single target Exchange server or all other Exchange servers.
The primary purposes of this script are:
Find the most recent full documentation at GitHub.
Copy Exchange 2013/2016 receive connector RC2 from server MBX01 to server MBX2
.\Copy-ReceiveConnector.ps1 -SourceServer MBX01 -ConnectorName RC2 ` -TargetServer MBX2 -DomainController MYDC1.mcsmemail.de
Copy Exchange 2013/2016 receive connector RC2 from server MBX01 to all other Exchange 2013 servers
.\Copy-ReceiveConnector.ps1 -SourceServer MBX01 -ConnectorName RC1 ` -CopyToAllOther -DomainController MYDC1.mcsmemail.de
Copy Exchange 2013/2016 receive connector relay from Exchange 2007 server MBX2007 to Exchange 2013 server MBX01 and reset network bindings
.\Copy-ReceiveConnector.ps1 -SourceServer MBX2007 -ConnectorName "relay" ` -TargetServer MBX01 -MoveToFrontend -ResetBindings ` -DomainController MYDC1.mcsmemail.de
Additional credits go to Jeffery Land, https://jefferyland.wordpress.com
The latest downloadable build of Exchange Server 2016 Cumulative Update 9 disclosed an information that was previously shown accidently to the public by Greg T. during his breakout session BRK3249 - Modern Authentication for Exchange Server On-Premises at Microsoft Ignite 2017.
As part of the global harmonization of the product name space of the well established Outlook brand the next release of Exchange Server will be named Outlook Server 2019.
This name change was mentioned originally on this slide:
Give it a thought and you'll realize that this change makes absolute sense as different product names for the same software function distract customers and users.
Another reason for renaming Exchange Server is a new functionality for integrating personal mailbox files (PST). It was and still is a tedious task for administrators to get hold of all those PST files in use by end users. Instead of implementing a complex and data protection safe process to import PST files to the primary users mailbox the new Outlook Server 2019 offers synchronized PST folders. A functionality we've waited for for years.
Two new functions are introduced as part the new modern Outlook Server 2019
How does it work?
The following diagram illustrates the new functionality in a simple Outlook Server 2019 setup:
The following screenshot illustrates the new PSTSync folder and some sample PST file for a user with SAMAccountName JohnDoe
It's good the see that there is a future for a email server product like Exchange Server and that after so many years of cloud only an on-premises only feature got added.
Enjoy the day and Happy Easter!