Since mid-2023, Exchange 2016 and Exchange 2019 do not need the MSMQ (Message Queuing) feature on the Windows Server anymore. You can de-install it via PowerShell (Run as Administrator):
Remove-WindowsFeature NET-WCF-MSMQ-Activation45,MSMQ
A server restart is needed after completion of the command.
In Microsoft Exchange on-prem, there is a self-signed certificate called
Microsoft Exchange Server Auth Certificate
This not bound to any IIS web site, but still needed for authentication purposes. It is valid for 5 years. If the certificate has expired or is about to expire, you can renew it with the following procedure:
Start the Exchange Management Shell and type:
(Get-AuthConfig).CurrentCertificateThumbprint | Get-ExchangeCertificate | Format-List
This should show you the details of
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In Microsoft Exchange on-prem, there is an internal certificate that is bound to the back-end web site. This certificate is self-signed and valid for 5 years. It is called
Micorosoft Exchange
The subject of the certificate is the server name itself. Find below the procedure to renew this certificate. It does not matter if the certificate is already expired or still valid.
Start the Exchange Management Shell
Get the thumbprint of the current certificate:
Get-ExchangeCertificate | where
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With Exchange 2019, Microsoft has introduced a new search engine: BigFunnel. This is the same engine that is used in Bing and in Exchange Online.
Unfortunately, sometimes, the search results are incomplete. While this might have different reasons, I am just looking at one prticular case here:
Incomplete search results are happening on OWA, i.e. this is an issue on the server, not on Outlook (the client)
The number of missing emails from the search results is visible in "BigFunnelNotIndexedCount"
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Exchange constantly writes DB Logs to disk. These logs only get cleared when a backup is done.
If you need to clear those logs without a backup, use the following commands (if the DB log files are on the d: drive):
Open a cmd box with admin rights
diskshadow
add volume d:
begin backup
create
end backup
That's it. You should now have much more free disk space.
Sometimes, the default maximum message size (including attachments) in Exchange is not enough (30 MB is the standard). To increase this to 100 MB, do the following:
First check the current maximum size on all relevant Exchange components:
Get-TransportConfig | ft MaxSendSize, MaxReceiveSize
Get-ReceiveConnector | ft Name, MaxmessageSize
Get-SendConnector | ft Name, MaxMessageSize
Get-Mailbox Administrator |ft Name, MaxsendSize, MaxReceiveSize
Then set it to 100 MB for all components:
Set-TransportConfig
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My experience with servers, networks and gadgets.
