Index: test/unit/mailer_test.rb
===================================================================
--- test/unit/mailer_test.rb	(revision 2837)
+++ test/unit/mailer_test.rb	(working copy)
@@ -238,4 +238,18 @@
     assert mail.bcc.include?('dlopper@somenet.foo')
     assert mail.body.include?('Bug #3: Error 281 when updating a recipe')
   end
+  
+  def test_notify_incoming_error
+    ActionMailer::Base.deliveries.clear
+    raw = IO.read(File.join("test/fixtures/mail_handler/ticket_with_attributes.eml"))
+    Mailer.deliver_notify_incoming_error(raw)
+    assert_equal 1, ActionMailer::Base.deliveries.size
+    mail = ActionMailer::Base.deliveries.last
+    assert mail.bcc.include?('admin@somenet.foo')
+    assert mail.subject.eql?('Incoming mail error notification')
+    assert mail.body.include?('This email was received by redmine and could not be processed.')
+    assert mail.body.include?('Lorem ipsum')
+    assert mail.body.include?('From: jsmith@somenet.foo')
+    assert mail.body.include?('Subject: New ticket on a given project')
+  end  
 end
Index: app/models/mailer.rb
===================================================================
--- app/models/mailer.rb	(revision 2837)
+++ app/models/mailer.rb	(working copy)
@@ -248,6 +248,14 @@
     subject 'Redmine test'
     body :url => url_for(:controller => 'welcome')
   end
+  
+  def notify_incoming_error(raw_email)
+		recipients User.active.find(:all, :conditions => {:admin => true}).collect { |u| u.mail }.compact
+    subject 'Incoming mail error notification'
+    orignal_mail = TMail::Mail.parse(raw_email)
+    orignal_mail.base64_decode
+		body :original_mail =>orignal_mail;
+  end
 
   # Overrides default deliver! method to prevent from sending an email
   # with no recipient, cc or bcc
Index: app/views/mailer/notify_incoming_error.text.plain.rhtml
===================================================================
--- app/views/mailer/notify_incoming_error.text.plain.rhtml	(revision 0)
+++ app/views/mailer/notify_incoming_error.text.plain.rhtml	(revision 0)
@@ -0,0 +1,7 @@
+This email was received by redmine and could not be processed.
+
+From: <%= @original_mail.from %>
+Subject: <%= @original_mail.subject %>
+------ BEGIN -------
+<%= @original_mail.body %>
+------ END -------
Index: lib/redmine/imap.rb
===================================================================
--- lib/redmine/imap.rb	(revision 2837)
+++ lib/redmine/imap.rb	(working copy)
@@ -21,6 +21,7 @@
   module IMAP
     class << self
       def check(imap_options={}, options={})
+        logger.debug "Checking messages" if logger && logger.debug?    
         host = imap_options[:host] || '127.0.0.1'
         port = imap_options[:port] || '143'
         ssl = !imap_options[:ssl].nil?
@@ -41,10 +42,15 @@
           else
             logger.debug "Message #{message_id} can not be processed" if logger && logger.debug?
             imap.store(message_id, "+FLAGS", [:Seen])
+						if imap_options[:notify_on_failure]
+						  logger.debug "Notify for failure" if logger && logger.debug?
+              Mailer.deliver_notify_incoming_error(msg)
+            end
             if imap_options[:move_on_failure]
               imap.copy(message_id, imap_options[:move_on_failure])
               imap.store(message_id, "+FLAGS", [:Deleted])
             end
+
           end
         end
         imap.expunge
Index: lib/tasks/email.rake
===================================================================
--- lib/tasks/email.rake	(revision 2837)
+++ lib/tasks/email.rake	(working copy)
@@ -91,6 +91,7 @@
   move_on_success=MAILBOX  move emails that were successfully received
                            to MAILBOX instead of deleting them
   move_on_failure=MAILBOX  move emails that were ignored to MAILBOX
+  notify_on_failure        notify redmine administrators when an error occurs
   
 Examples:
   # No project specified. Emails MUST contain the 'Project' keyword:
@@ -117,7 +118,8 @@
                       :password => ENV['password'],
                       :folder => ENV['folder'],
                       :move_on_success => ENV['move_on_success'],
-                      :move_on_failure => ENV['move_on_failure']}
+                      :move_on_failure => ENV['move_on_failure'],
+                      :notify_on_failure => ENV['notify_on_failure']}
                       
       options = { :issue => {} }
       %w(project status tracker category priority).each { |a| options[:issue][a.to_sym] = ENV[a] if ENV[a] }