使用gmail smtp的SmtpAppender log4net

Question

我为log4net配置了一个smtpAppender (gmail)。奇怪的问题是，当我在IIS7.5上部署应用程序时，smtpAppender不工作。

我尝试使用telnet命令测试与gmail smtp的连接。因此，我可以检查是否有任何东西被阻塞，但测试工作正常。

我的日志配置：

  <log4net>
    <appender name="RollingFile" type="log4net.Appender.RollingFileAppender">
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
      <file value="C:\logs\MyLog.log"/>
      <appendToFile value="true"/>
      <maximumFileSize value="500KB"/>
      <maxSizeRollBackups value="2"/>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date %level %logger - %message%newline"/>
      </layout>
    </appender>
    <appender name="SmtpAppender" type="log4net.Appender.SmtpAppender,log4net">
      <to value="test1@test.com" />
      <from value="test2@test.com" />
      <subject value="Error logging message" />
      <smtpHost value="smtp.gmail.com" />
      <port value="587"/>
      <authentication value="Basic" />
      <username value="test05@gmail.com"/>
      <password value="password"/>
      <EnableSsl value="true" />
      <bufferSize value="1" />
      <lossy value="true" />
      <evaluator type="log4net.Core.LevelEvaluator,log4net">
        <threshold value="ERROR" />
      </evaluator>
      <layout type="log4net.Layout.PatternLayout,log4net">
        <conversionPattern value="%property{log4net:HostName} :: %level :: %message %newlineLogger: %logger%newlineThread: %thread%newlineDate: %date%newlineNDC: %property{NDC}%newline%newline" />
      </layout>
    </appender>
    <root>
      <level value="ALL"/>
      <appender-ref ref="RollingFile"/>
      <appender-ref ref="SmtpAppender"/>
    </root>
  </log4net>

调试后，我发现了以下异常：

log4net:ERROR [SmtpAppender] ErrorCode: GenericFailure. Error occurred while sending e-mail notification.
System.Net.Mail.SmtpException: The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required. Learn more at
   at System.Net.Mail.MailCommand.CheckResponse(SmtpStatusCode statusCode, String response)
   at System.Net.Mail.MailCommand.Send(SmtpConnection conn, Byte[] command, String from)
   at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, SmtpFailedRecipientException& exception)
   at System.Net.Mail.SmtpClient.Send(MailMessage message)
   at log4net.Appender.SmtpAppender.SendEmail(String messageBody)
   at log4net.Appender.SmtpAppender.SendBuffer(LoggingEvent[] events)

Answer 1

虽然这不是对您问题的直接回答，但我相信它可以帮助您发现问题。Log4net在静默中失败，这是故意的。为了获得有关错误的信息，您可以启用log4net调试

检查log4net上的How do I enable log4net internal debugging?常见问题

Answer 2

问题出在gmail服务器端。Gmail服务器阻止了我的电子邮件，因为它怀疑我使用电子邮件帐户的地址。

Answer 3

您需要配置权限以允许从google开发者门户中的应用程序发送电子邮件