Update Set-Mailbox.md

DisableThrottling CU12

Author: chrisda

exchange/exchange-ps/exchange/mailboxes/Set-Mailbox.md

@@ -73,6 +73,7 @@ Set-Mailbox [-Identity] <MailboxIdParameter>
  [-DefaultAuditSet <MultiValuedProperty>]
  [-DefaultPublicFolderMailbox <RecipientIdParameter>]
  [-DeliverToMailboxAndForward <$true | $false>]
+ [-DisableThrottling <$true | $false>]
  [-DisplayName <String>]
  [-DomainController <Fqdn>]
  [-DowngradeHighPriorityMessagesEnabled <$true | $false>]
@@ -2213,6 +2214,8 @@ Accept wildcard characters: False
 ```
 
 ### -DisableThrottling
+This parameter is available only in on-premises Exchange.
+
 The DisableThrottling parameter enables or disables sender rate throttling for the mailbox. Valid values are:
 
 - $true: Messages sent by this mailbox will not be throttled by Sender Rate Control. We only recommend this value for moderation mailboxes.
@@ -2223,7 +2226,7 @@ The DisableThrottling parameter enables or disables sender rate throttling for t
 Type: $true | $false
 Parameter Sets: (All)
 Aliases:
-Applicable: Exchange Server 2016
+Applicable: Exchange Server 2016, Exchange Server 2019
 Required: False
 Position: Named
 Default value: False