Disable Exchange Back Pressure

More information about “Exchange Back Pressure”

https://technet.microsoft.com/en-us/library/bb201658%28v=exchg.160%29.aspx

Back pressure is a system resource monitoring feature of the Microsoft Exchange Transport service that exists on Mailbox servers and Edge Transport servers. Back pressure detects when vital system resources, such as hard drive space and memory, are over-utilized, and takes action to prevent the server from becoming completely overwhelmed and unavailable. For example, when a system resource utilization level on the Exchange server is determined to be too high, the server delays accepting new messages. If the resource utilization gets worse, the server stops accepting new messages to work exclusively on processing all existing messages, and might even stop processing outgoing messages. When the system resource utilization returns to an acceptable level, the Exchange server resumes normal operation by accepting new messages and processing outgoing messages.

 

To disable the Back Pressure, edit the following file with notepad:

…Program Files\Microsoft\Exchange Server\V14\Bin\EdgeTransport.exe.config

And set the following value to “False”:

<add key="EnableResourceMonitoring" value="True" />

To

<add key="EnableResourceMonitoring" value="False" />

Finally, restart the Exchange Transport Service

 

/!\  Please keep in mind that it is only a TEMP solution /!\

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