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550 5.2.3 RESOLVER.RST.SendSizeLimit.Org; message too large for this organization

Did you encounter a problem when you are trying to set message size in the organization, but still get the 550 5.2.3 error?
This is tricky, because on the transport level you need to set the same for both - Receive i Send size.

Set-TransportConfig  -MaxReceiveSize 50MB -MaxSendSize 50MB