Log4net SmtpAppender not working

Question

I tried using this configuration:

<log4net> <appender name="SmtpAppender" type="log4net.Appender.SmtpAppender,log4net"> <to value=" [e-mail] " /> <from value=" [e-mail] " /> <subject value="TimeZone Crash log" /> <smtpHost value="in.mailjet.com" /> <username value="login" /> <password value="password" /> <bufferSize value="10" /> <lossy value="false" /> <evaluator type="log4net.Core.LevelEvaluator,log4net"> <threshold value="WARN" /> </evaluator> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="%level %date - %message%newline" /> </layout> </appender> <logger name="SmtpAppender"> <level value="ERROR" /> <appender-ref ref="SmtpAppender" /> </logger> <appender name="Trace" type="log4net.Appender.RollingFileAppender"> <file value="c:\Traces\TimeZone.log" /> <PreserveLogFileNameExtension value="true" /> <appendToFile value="true" /> <maximumFileSize value="10MB" /> <maxSizeRollBackups value="2" /> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="%level %date - %message%newline" /> </layout> <param name="Encoding" value="utf-8" /> </appender> <logger name="Trace"> <!--ALL DEBUG INFO WARN ERROR FATAL OFF--> <level value="DEBUG" /> <appender-ref ref="Trace" /> </logger> </log4net> 

I had this internal journal

 log4net: log4net assembly [log4net, Version=1.2.13.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a]. Loaded from [C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\project\27cf2c51\20668825\assembly\dl3\5844a199\aebaa176_49edcf01\log4net.dll]. (.NET Runtime [4.0.30319.18444] on Microsoft Windows NT 6.1.7601 Service Pack 1) log4net: defaultRepositoryType [log4net.Repository.Hierarchy.Hierarchy] log4net: Creating repository for assembly [Company.Server.Utils, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] log4net: Assembly [Company.Server.Utils, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] Loaded From [C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\project\27cf2c51\20668825\assembly\dl3\a39c173f\4cf4538a_4aedcf01\Company.Server.Utils.dll] log4net: Assembly [Company.Server.Utils, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] does not have a RepositoryAttribute specified. log4net: Assembly [Company.Server.Utils, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] using repository [log4net-default-repository] and repository type [log4net.Repository.Hierarchy.Hierarchy] log4net: Creating repository [log4net-default-repository] using type [log4net.Repository.Hierarchy.Hierarchy] log4net: configuring repository [log4net-default-repository] using .config file section log4net: Application config file is [D:\folder\trunk\Project\Project\web.config] log4net: Configuring Repository [log4net-default-repository] log4net: Configuration update mode [Merge]. log4net: Retrieving an instance of log4net.Repository.Logger for logger [SmtpAppender]. log4net: Setting [SmtpAppender] additivity to [True]. log4net: Logger [SmtpAppender] Level string is [WARN]. log4net: Logger [SmtpAppender] level set to [name="WARN",value=60000]. log4net: Loading Appender [SmtpAppender] type: [log4net.Appender.SmtpAppender,log4net] log4net: Setting Property [To] to String value [ [e-mail] ] log4net: Setting Property [From] to String value [ [e-mail] ] log4net: Setting Property [Subject] to String value [TimeZone Crash log] log4net: Setting Property [SmtpHost] to String value [in.mailjet.com] log4net: Setting Property [Username] to String value [login] log4net: Setting Property [Password] to String value [password] log4net: Setting Property [BufferSize] to Int32 value [10] log4net: Setting Property [Lossy] to Boolean value [False] log4net: Setting Property [Threshold] to Level value [WARN] log4net: Setting Property [Evaluator] to object [log4net.Core.LevelEvaluator] log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: Setting Property [ConversionPattern] to String value [%level %date - %message%newline] log4net: Converter [level] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: Converter [literal] Option [ ] Format [min=-1,max=2147483647,leftAlign=False] log4net: Converter [date] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: Converter [literal] Option [ - ] Format [min=-1,max=2147483647,leftAlign=False] log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: Setting Property [Layout] to object [log4net.Layout.PatternLayout] log4net: Created Appender [SmtpAppender] log4net: Adding appender named [SmtpAppender] to logger [SmtpAppender]. log4net: Retrieving an instance of log4net.Repository.Logger for logger [Trace]. log4net: Setting [Trace] additivity to [True]. log4net: Logger [Trace] Level string is [DEBUG]. log4net: Logger [Trace] level set to [name="DEBUG",value=30000]. log4net: Loading Appender [Trace] type: [log4net.Appender.RollingFileAppender] log4net: Setting Property [File] to String value [c:\Traces\TimeZone.log] log4net: Setting Property [PreserveLogFileNameExtension] to Boolean value [True] log4net: Setting Property [AppendToFile] to Boolean value [True] log4net: Setting Property [MaximumFileSize] to String value [10MB] log4net: Setting Property [MaxSizeRollBackups] to Int32 value [2] log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: Setting Property [ConversionPattern] to String value [%level %date - %message%newline] log4net: Converter [level] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: Converter [literal] Option [ ] Format [min=-1,max=2147483647,leftAlign=False] log4net: Converter [date] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: Converter [literal] Option [ - ] Format [min=-1,max=2147483647,leftAlign=False] log4net: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: Setting Property [Layout] to object [log4net.Layout.PatternLayout] log4net: Setting Property [Encoding] to UTF8Encoding value [System.Text.UTF8Encoding] log4net: Type = [0], r0 = [.1970-01-01], r1 = [.1970-01-01] log4net: Type = [1], r0 = [.1970-01-01], r1 = [.1970-01-01] log4net: Type = [2], r0 = [.1970-01-01], r1 = [.1970-01-01] log4net: Type = [3], r0 = [.1970-01-01], r1 = [.1970-01-02] log4net: Searched for existing files in [c:\Traces] log4net: curSizeRollBackups starts at [0] log4net: [.2014-11-14] vs. [.2014-11-14] log4net: Opening file for writing [c:\Traces\TimeZone.log] append [True] log4net: Created Appender [Trace] log4net: Adding appender named [Trace] to logger [Trace]. log4net: Hierarchy Threshold [] 

I found the log in the TimeZone.log file, but without mail! Please note that I am logged in to Error, and I can send emails by code. I have this configuration:

 <system.net> <mailSettings> <smtp deliveryMethod="network"> <network defaultCredentials="false" host="in.mailjet.com" userName="login" password="password" enableSsl="true"/> </smtp> </mailSettings> </system.net> 

I do not know what I am doing wrong!

Answer 1

I am solving my problem using gmail. I tried with the same configuration (except for the port, host ... etc.) with mailjet, but this did not work.

My configuration now:

 <appender name="SmtpAppender" type="log4net.Appender.SmtpAppender"> <to value=" [e-mail] " /> <from value=" [e-mail] " /> <subject value="Crash log" /> <smtpHost value="smtp.gmail.com" /> <authentication value="Basic" /> <port value="587" /> <username value="myusername" /> <password value="mypassword" /> <bufferSize value="1" /> <EnableSsl value="true"/> <lossy value="true" /> <evaluator type="log4net.Core.LevelEvaluator"> <threshold value="ERROR"/> </evaluator> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="%level %date - %message%newline" /> </layout> </appender> 

Answer 2

Using this question for my own troubleshooting, I decided to share my findings.

Email was not sent when I used port 465, although this is acceptable for the server. A simple solution was to use:

 <port value="587" /> 

For those interested in using other than gmail, below are the full settings for yahoo mail:

  <configuration> <configSections> <section name ="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/> </configSections> <log4net> <appender name="SmtpAppender" type="log4net.Appender.SmtpAppender"> <to value=" [e-mail] ; [e-mail] " /> <from value=" [e-mail] " /> <subject type="log4net.Util.PatternString" value="Message logged" /> <smtpHost value="smtp.mail.yahoo.com" /> <authentication value="Basic" /> <port value="587" /> <username value=" [e-mail] " /> <password value="your_password" /> <bufferSize value="1" /> <EnableSsl value="true"/> <lossy value="false" /> <threshold value="DEBUG" /> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="%utcdate [%level] - %message%newline%exception" /> </layout> </appender> <root> <level value="DEBUG"/> <appender-ref ref="SmtpAppender"/> </root> </log4net> </configuration> 

Log4net fails, so you will not see any errors. To debug, add the following to the app.config / web.config file. Any errors will be recorded there.

  <appSettings> <add key="log4net.Internal.Debug" value="true" /> </appSettings> <system.diagnostics> <trace autoflush="true"> <listeners> <add name="tracer" type="System.Diagnostics.TextWriterTraceListener" initializeData="C:\\yourfolder\\log4net.log" /> </listeners> </trace> </system.diagnostics> 

Answer 3

I don’t see much with your configuration, and it looks like the configuration I use that works. Try the following tests:

Change

 <appender name="SmtpAppender" type="log4net.Appender.SmtpAppender,log4net"> 

to

 <appender name="SmtpAppender" type="log4net.Appender.SmtpAppender"> 

Edit

  <bufferSize value="10" /> 

to

  <bufferSize value="1" /> 

This will prevent buffering, so emails will be sent immediately.

Try deleting the following, so everything has been emailed:

  <evaluator type="log4net.Core.LevelEvaluator,log4net"> <threshold value="WARN" /> </evaluator> 

Answer 4

The configuration has a username and password, but does not have authentication. Adding the next authentication element means that your config will use the username and password when connecting.

 <authentication value="Basic" />