2030MSExchangeFrontEndTransportSmtpSendApplicationThe Ehlo options for the client proxy target 10.10.5.123 did not match while setting up proxy for user amata/es_smtp on inbound session 08D40BBF5D3046B3. The mismatched settings might cause some messages to get rejected. Continue with proxying even though there is a mismatch. The critical non-matching options were maxSize. The non-critical non-matching options were .You may see this error if you have multiple Exchange 2013 or 2016 servers where the max receive and transport size are mismatched across your servers on your receive connectors.