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Dominik Psenner commented on LOG4NET-474: ----------------------------------------- I adapted the priority and the type of the issue according to my evaluation. Could you work out what actually caused your issue? > log4net:ERROR [SmtpAppender] ErrorCode: GenericFailure. Error occurred while > sending e-mail notification. > --------------------------------------------------------------------------------------------------------- > > Key: LOG4NET-474 > URL: https://issues.apache.org/jira/browse/LOG4NET-474 > Project: Log4net > Issue Type: Improvement > Components: Core > Environment: Microsoft Windows Server 2012, Running in part of > windows service. > Reporter: David Rankin > Priority: Minor > Original Estimate: 0.25h > Remaining Estimate: 0.25h > > Error happens when trying to send emails. > I have checked github source here to try help with this problem. > https://github.com/apache/log4net/blob/782e8267dc44a3db5e0b095c91c1de76a37a9e9b/src/log4net/Appender/SmtpAppender.cs > If you wrap the SmtpClient (on Line 394 ) It should probably fix this issue. > Thats just from my experience. Please let me know if you need anthing else? > Please see the error log from my debug console. > log4net:ERROR [SmtpAppender] ErrorCode: GenericFailure. Error occurred while > sending e-mail notification. > System.Net.Mail.SmtpException: Failure sending mail. ---> > System.IO.IOException: Unable to read data from the transport connection: > net_io_connectionclosed. > at System.Net.Mail.SmtpReplyReaderFactory.ProcessRead(Byte[] buffer, Int32 > offset, Int32 read, Boolean readLine) > at System.Net.Mail.SmtpReplyReaderFactory.ReadLines(SmtpReplyReader > caller, Boolean oneLine) > at System.Net.Mail.SmtpReplyReaderFactory.ReadLine(SmtpReplyReader caller) > at System.Net.Mail.CheckCommand.Send(SmtpConnection conn, String& response) > at System.Net.Mail.MailCommand.Send(SmtpConnection conn, Byte[] command, > MailAddress from, Boolean allowUnicode) > at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, > MailAddressCollection recipients, String deliveryNotify, Boolean > allowUnicode, SmtpFailedRecipientException& exception) > at System.Net.Mail.SmtpClient.Send(MailMessage message) > --- End of inner exception stack trace --- > at System.Net.Mail.SmtpClient.Send(MailMessage message) > at log4net.Appender.SmtpAppender.SendEmail(String messageBody) > at log4net.Appender.SmtpAppender.SendBuffer(LoggingEvent[] events) -- This message was sent by Atlassian JIRA (v6.3.4#6332)