I'm trying to get 5 emails sent and am getting 1 random one sent. log = LoggerFactory.getLogger("applogger"); //TODO Get emails sending logErr = LoggerFactory.getLogger("Error"); log.info("test logger"); logErr.error("test error message1"); logErr.error("test error message2"); logErr.error("test error message3"); logErr.error("test error message4"); logErr.error("test error message5"); log.error("from applogger"); try { Thread.sleep(5000); } catch(InterruptedException ex) { Thread.currentThread().interrupt(); } System.exit(0); Sends one email out of the 5 error messages and the one sent is not predictable. Config file <configuration debug="true"> <timestamp key="bySecond" datePattern="yyyyMMdd'T'HHmmss"/> <appender name="ERROREMAIL" class="ch.qos.logback.classic.net.SMTPAppender"> <cyclicBufferTracker class="ch.qos.logback.core.spi.CyclicBufferTracker"> <!-- send just one log entry per email --> <bufferSize>1</bufferSize> </cyclicBufferTracker> <smtpHost>mysmtp.host.edu</smtpHost> <to>epalmer@richmond.edu<mailto:epalmer@richmond.edu></to> <from>epalmer@richmond.edu<mailto:epalmer@richmond.edu></from> <subject>Error in DirPeople2Xml: %logger{20} - %m</subject> <layout class="ch.qos.logback.classic.PatternLayout"> <pattern>%date %-30(%d{HH:mm:ss.SSS} [%M]) %-5level %-33(%C{32}) - %msg%n</pattern> </layout> </appender> <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender"> <!-- encoders are assigned the type ch.qos.logback.classic.encoder.PatternLayoutEncoder by default --> <encoder> <pattern>%-30(%d{HH:mm:ss.SSS} [%M]) %-5level %-33(%C{32}) - %msg%n</pattern> </encoder> </appender> <appender name="FILE" class="ch.qos.logback.core.FileAppender"> <file>/Volumes/HD2/IDEAProjects/DirPeople2Xml/local/logs/log-${bySecond}.log</file> <append>true</append> <!-- encoders are assigned the type ch.qos.logback.classic.encoder.PatternLayoutEncoder by default --> <encoder> <pattern>%-30(%d{HH:mm:ss.SSS} [%M]) %-5level %-33(%C{32}) - %msg%n</pattern> </encoder> </appender> <logger name="Error" level="error"> <appender-ref ref="ERROREMAIL" /> </logger> <root level="info"> <appender-ref ref="FILE" /> <appender-ref ref="STDOUT" /> </root> </configuration> Stdout messages 07:42:08,457 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy] 07:42:08,457 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback-test.xml] at [file:/Volumes/HD2/IDEAProjects/DirPeople2Xml/target/classes/logback-test.xml] 07:42:08,573 |-INFO in ch.qos.logback.core.joran.action.TimestampAction - Using current interpretation time, i.e. now, as time reference. 07:42:08,575 |-INFO in ch.qos.logback.core.joran.action.TimestampAction - Adding property to the context with key="bySecond" and value="20130621T074208" to the LOCAL scope 07:42:08,575 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.classic.net.SMTPAppender] 07:42:08,592 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [ERROREMAIL] 07:42:08,690 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender] 07:42:08,693 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [STDOUT] 07:42:08,697 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property 07:42:08,703 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.FileAppender] 07:42:08,705 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [FILE] 07:42:08,708 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property 07:42:08,708 |-INFO in ch.qos.logback.core.FileAppender[FILE] - File property is set to [/Volumes/HD2/IDEAProjects/DirPeople2Xml/local/logs/log-20130621T074208.log] 07:42:08,711 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [Error] to ERROR 07:42:08,711 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [ERROREMAIL] to Logger[Error] 07:42:08,712 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to INFO 07:42:08,712 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [FILE] to Logger[ROOT] 07:42:08,712 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [STDOUT] to Logger[ROOT] 07:42:08,712 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration. 07:42:08,713 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@5e0feb48 - Registering current configuration as safe fallback point 07:42:08.717 [main] INFO e.r.i.w.D.PeopleXmlMain - some log message 07:42:08.721 [startApp] INFO e.r.i.w.DirPeople2Xml.AppInfo - test logger 07:42:08,728 |-INFO in ch.qos.logback.classic.net.SMTPAppender[ERROREMAIL] - SMTPAppender [ERROREMAIL] is tracking [1] buffers 07:42:08.721 [startApp] ERROR e.r.i.w.DirPeople2Xml.AppInfo - test error message1 07:42:08.728 [startApp] ERROR e.r.i.w.DirPeople2Xml.AppInfo - test error message2 07:42:08.728 [startApp] ERROR e.r.i.w.DirPeople2Xml.AppInfo - test error message3 07:42:08.729 [startApp] ERROR e.r.i.w.DirPeople2Xml.AppInfo - test error message4 07:42:08.729 [startApp] ERROR e.r.i.w.DirPeople2Xml.AppInfo - test error message5 07:42:08.730 [startApp] ERROR e.r.i.w.DirPeople2Xml.AppInfo - from applogger 07:42:08,754 |-INFO in ch.qos.logback.classic.net.SMTPAppender[ERROREMAIL] - About to send out SMTP message "Error in DirPeople2Xml: Error - test error message2" to [epalmer@richmond.edu<mailto:epalmer@richmond.edu>] 07:42:08,754 |-INFO in ch.qos.logback.classic.net.SMTPAppender[ERROREMAIL] - About to send out SMTP message "Error in DirPeople2Xml: Error - test error message5" to [epalmer@richmond.edu<mailto:epalmer@richmond.edu>] 07:42:08,755 |-INFO in ch.qos.logback.classic.net.SMTPAppender[ERROREMAIL] - About to send out SMTP message "Error in DirPeople2Xml: Error - test error message4" to [epalmer@richmond.edu<mailto:epalmer@richmond.edu>] 07:42:08,755 |-INFO in ch.qos.logback.classic.net.SMTPAppender[ERROREMAIL] - About to send out SMTP message "Error in DirPeople2Xml: Error - test error message1" to [epalmer@richmond.edu<mailto:epalmer@richmond.edu>] 07:42:08,755 |-INFO in ch.qos.logback.classic.net.SMTPAppender[ERROREMAIL] - About to send out SMTP message "Error in DirPeople2Xml: Error - test error message3" to [epalmer@richmond.edu<mailto:epalmer@richmond.edu>] Thanks in advance for help -- Eric Palmer Web Services U of Richmond