{"id":1478,"date":"2016-08-01T18:03:54","date_gmt":"2016-08-01T16:03:54","guid":{"rendered":"http:\/\/www.limilabs.com\/blog\/?p=1478"},"modified":"2023-08-04T14:34:03","modified_gmt":"2023-08-04T12:34:03","slug":"logging-in-mail-dll","status":"publish","type":"post","link":"https:\/\/www.limilabs.com\/blog\/logging-in-mail-dll","title":{"rendered":"Logging in Mail.dll email client"},"content":{"rendered":"\n<p>This article provides a comprehensive guide on how to perform logging within the <a href=\"\/mail\">Mail.dll .NET email client<\/a>. It outlines step-by-step instructions for implementing robust logging mechanisms, enhancing troubleshooting capabilities, and tracking email communication effectively. <\/p>\n\n\n\n<p>By following the methods detailed in the article, VisualBasic and C# developers can seamlessly integrate logging features into their applications, gaining valuable insights into the Imap, Pop3 and Smtp clients behavior and facilitating streamlined debugging processes.<\/p>\n\n\n\n<p>To enable logging for all Mail.dll .NET clients (<em>Imap<\/em>, <em>Pop3<\/em>, <em>Smtp<\/em>) you only need to add the following line before you connect:<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: csharp; title: ; notranslate\" title=\"\">\n\/\/ C# version:\n\nLimilabs.Mail.Log.Enabled = true;\n<\/pre><\/div>\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: vb; title: ; notranslate\" title=\"\">\n' VB.NET version:\n\nLimilabs.Mail.Log.Enabled = True\n<\/pre><\/div>\n\n\n<p>You can observe the log output by:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>looking at the Visual Studio&#8217;s <strong>output window<\/strong> (View\/Output\/&#8217;Show output from&#8217;: Debug)<\/li><li>subscribing to <code>Log.WriteLine<\/code> event<\/li><li>defining custom listeners using your application&#8217;s config file (App.config or Web.config)<\/li><li>using log4net<\/li><\/ul>\n\n\n\n<p>This is how the log looks like in the Visual Studio&#8217;s output window:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"\/blog\/wp-content\/uploads\/2010\/11\/Mail_Log.png\" alt=\"\" title=\"Mail.dll Log\"\/><\/figure><\/div>\n\n\n\n<p>For regular .NET framework you can also enable logging using your application&#8217;s config file (App.config, Web.config):<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: xml; title: ; notranslate\" title=\"\">\n&lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot; ?&gt;\n&lt;configuration&gt;\n    &lt;system.diagnostics&gt;\n\n      &lt;switches&gt;\n        &lt;add name=&quot;Mail.dll&quot; value=&quot;Verbose&quot; \/&gt;\n      &lt;\/switches&gt;\n\n    &lt;\/system.diagnostics&gt;\n&lt;\/configuration&gt;\n<\/pre><\/div>\n\n\n<h2 class=\"wp-block-heading\">Logging with log4net<\/h2>\n\n\n\n<p>If you are using <a href=\"https:\/\/logging.apache.org\/log4net\/\">log4net<\/a>, Mail.dll is going to use log4net instead of standard .NET <em>System.Net.TraceSource<\/em> class. Please refer to log4net manual on how to capture log entries.<\/p>\n\n\n\n<p>Mail.dll uses<strong> logger called &#8220;Mail.dll&#8221;<\/strong><\/p>\n\n\n\n<p><code>_logger = LogManager.GetLogger(\"Mail.dll\")<\/code> <\/p>\n\n\n\n<p>and <strong>level Info<\/strong> <code>_logger.Info(message)<\/code> to log information.<\/p>\n\n\n\n<p>Please remember that even when using log4net, you need to enable logging by setting &#8220;<code>Limilabs.Mail.Log.Enabled = True<\/code>&#8221; or by setting <em>Mail.dll<\/em> trace switch in the config file (App.config, Web.config) to <em>Verbose<\/em> as shown above.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Log.WriteLine<\/h2>\n\n\n\n<p><code>Limilabs.Mail.Log<\/code> class exposes <code>WriteLine<\/code> event. You can use that event to subscribe your own logging library in both .NET and .NET framework.<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: csharp; title: ; notranslate\" title=\"\">\n\/\/ C#\n\nLimilabs.Mail.Log.WriteLine += Console.WriteLine;\n<\/pre><\/div>\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: vb; title: ; notranslate\" title=\"\">\n' VB.NET\n\nAddHandler Limilabs.Mail.Log.WriteLine, AddressOf Console.WriteLine\n<\/pre><\/div>\n\n\n<h2 class=\"wp-block-heading\">Log to file (.NET framework)<\/h2>\n\n\n\n<p>You&#8217;ll need to define a <em>TextWriterTraceListener<\/em> that writes to a file and connect it with Mail.dll trace source. The easiest solution is to modify your application&#8217;s config file App.config or Web.config accordingly:<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: xml; title: ; notranslate\" title=\"\">\n&lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot; ?&gt;\n&lt;configuration&gt;\n    &lt;system.diagnostics&gt;\n\n        &lt;trace autoflush=&quot;true&quot;\/&gt;\n\n        &lt;switches&gt;\n            &lt;add name=&quot;Mail.dll&quot; value=&quot;Verbose&quot;\/&gt;\n        &lt;\/switches&gt;\n\n        &lt;sources&gt;\n            &lt;source name=&quot;Mail.dll&quot;&gt;\n                &lt;listeners&gt;\n                    &lt;add name=&quot;MailLogFile&quot;\/&gt;\n                &lt;\/listeners&gt;\n            &lt;\/source&gt;\n        &lt;\/sources&gt;\n\n        &lt;sharedListeners&gt;\n            &lt;add\n                name=&quot;MailLogFile&quot;\n                type=&quot;System.Diagnostics.TextWriterTraceListener&quot;\n                initializeData=&quot;c:\\folder-with-write-access\\mail.log&quot;\/&gt;\n        &lt;\/sharedListeners&gt;\n\n    &lt;\/system.diagnostics&gt;\n&lt;\/configuration&gt;\n<\/pre><\/div>","protected":false},"excerpt":{"rendered":"<p>This article provides a comprehensive guide on how to perform logging within the Mail.dll .NET email client. It outlines step-by-step instructions for implementing robust logging mechanisms, enhancing troubleshooting capabilities, and tracking email communication effectively. By following the methods detailed in the article, VisualBasic and C# developers can seamlessly integrate logging features into their applications, gaining [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[15,33,28,32,42,50,57],"class_list":["post-1478","post","type-post","status-publish","format-standard","hentry","category-mail-dll","tag-c","tag-email-component","tag-imap","tag-log4net","tag-pop3","tag-smtp","tag-vb-net"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/posts\/1478"}],"collection":[{"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/comments?post=1478"}],"version-history":[{"count":21,"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/posts\/1478\/revisions"}],"predecessor-version":[{"id":6506,"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/posts\/1478\/revisions\/6506"}],"wp:attachment":[{"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/media?parent=1478"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/categories?post=1478"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/tags?post=1478"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}