Hi, I'm trying to connect to a SimpleServerSocket like the example in the documentation with a SocketAppender. If I send messages continuosly, the server don't receive the messages. If the client programs sends the messages with a sleep, the server receives the message correctly. Can you help me?. This is the code and the configuration file: Client program: /* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package logbackc; import java.util.ArrayList; import java.util.Date; import java.util.Random; import java.util.logging.Level; import org.slf4j.Logger; import org.slf4j.LoggerFactory; public class LogBackC { /** * @param args the command line arguments */ public static void main(String[] args) throws InterruptedException { Logger logger = LoggerFactory.getLogger("ABCDEF"); Integer th = 1; Integer pe = 100; Random r = new Random(); for (int i = 0; i < pe; i++) { Integer num = r.nextInt(10); Boolean war = r.nextBoolean(); String message= "ABCDEF-" + (war ? "W" : "E") +"-"+ num; logger.info("{} {} {}",message, th, i); } } } Client config file: <?xml version="1.0" encoding="UTF-8"?> <configuration> <property name="HOSTNAME" value="127.0.0.1" /> <property name="PORT" value="6000" /> <appender name="SOCKET" class="ch.qos.logback.classic.net.SocketAppender"> <remoteHost>${HOSTNAME}</remoteHost> <port>${PORT}</port> <reconnectionDelay>10000</reconnectionDelay> <includeCallerData>false</includeCallerData> </appender> <root level="INFO"> <appender-ref ref="SOCKET" /> </root> </configuration> Server config file: <?xml version="1.0" encoding="UTF-8"?> <configuration> <appender name="FILE" class="ch.qos.logback.core.FileAppender"> <file>testFile.log</file> <append>true</append> <encoder> <pattern>%-4relative [%thread] %-5level %logger{35} - %msg%n</pattern> </encoder> </appender> <root level="DEBUG"> <appender-ref ref="FILE" /> </root> </configuration> Thank you very much