Index: app/models/mail_handler.rb
===================================================================
--- app/models/mail_handler.rb	(revision 17857)
+++ app/models/mail_handler.rb	(working copy)
@@ -91,7 +91,7 @@
     @handler_options = options
     sender_email = email.from.to_a.first.to_s.strip
     # Ignore emails received from the application emission address to avoid hell cycles
-    if sender_email.casecmp(Setting.mail_from.to_s.strip) == 0
+    if sender_email.casecmp(Setting.mail_from_address) == 0
       if logger
         logger.info  "MailHandler: ignoring email from Redmine emission address [#{sender_email}]"
       end
Index: app/models/setting.rb
===================================================================
--- app/models/setting.rb	(revision 17857)
+++ app/models/setting.rb	(working copy)
@@ -228,6 +228,12 @@
     Object.const_defined?(:OpenID) && self[:openid].to_i > 0
   end

+  # Extracts an email address ("joe@example.com") from
+  # Setting.mail_from ("Joe Bloggs <joe@example.com>")
+  def self.mail_from_address
+    self.mail_from.to_s.gsub(/(?:.*<|>.*|\(.*\))/, '').strip
+  end
+
   # Checks if settings have changed since the values were read
   # and clears the cache hash if it's the case
   # Called once per request
Index: test/unit/setting_test.rb
===================================================================
--- test/unit/setting_test.rb	(revision 17857)
+++ test/unit/setting_test.rb	(working copy)
@@ -112,6 +112,23 @@
     end
   end

+  def test_mail_from_address
+    mail_from_strings = [
+      'joe@example.com',
+      '<joe@example.com>',
+      'Joe Bloggs <joe@example.com>',
+      'display_name@example.com <joe@example.com>',
+      'joe@example.com (Joe Bloggs)',
+      'joe@example.com (display_name@example.com)'
+    ]
+
+    mail_from_strings.each do |from_value|
+      with_settings :mail_from => from_value do
+        assert_equal 'joe@example.com', Setting.mail_from_address
+      end
+    end
+  end
+
   def test_setting_serialied_as_binary_should_be_loaded_as_utf8_encoded_strings
     yaml = <<-YAML
 ---