diff --git a/lib/rgrb/plugin/server_connection_report/generator.rb b/lib/rgrb/plugin/server_connection_report/generator.rb
index 94ac5f20..73017c2a 100644
--- a/lib/rgrb/plugin/server_connection_report/generator.rb
+++ b/lib/rgrb/plugin/server_connection_report/generator.rb
@@ -16,7 +16,8 @@ class Generator
         def configure(config_data)
           super
 
-          @mail = MailSender.new(config_data['Mail'] || {})
+          @mail = MailSender.new(config_data['Mail'] || {},
+                                 config_data[:logger])
           @mail.load_message_template("#{@data_path}/#{config_data['MessageTemplate']}.txt")
 
           self
diff --git a/lib/rgrb/plugin/server_connection_report/mail_sender.rb b/lib/rgrb/plugin/server_connection_report/mail_sender.rb
index 50828a3c..c2192e71 100644
--- a/lib/rgrb/plugin/server_connection_report/mail_sender.rb
+++ b/lib/rgrb/plugin/server_connection_report/mail_sender.rb
@@ -10,10 +10,11 @@ module ServerConnectionReport
       # メール送信を司るクラス
       class MailSender
         # 送信データを初期化する
-        # @param [Hash] config
+        # @param [Hash] config 設定
+        # @param [Object] logger ロガー
         # @option [String] to 送信先
         # @option [Hash] smtp 送信に利用するSMTPサーバーの設定
-        def initialize(config)
+        def initialize(config, logger = nil)
           if(config['SMTP'])
             @mail_config = symbolize_keys(config['SMTP'])
               .delete_if do |key, value|
@@ -22,7 +23,7 @@ def initialize(config)
           end
           @to = config['To'] || 'root@localhost'
 
-          @logger = Lumberjack::Logger.new(
+          @logger = logger || Lumberjack::Logger.new(
             $stdout, progname: self.class.to_s
           )
         end