added fix for using sendmail with exim, the default -t argument behaves different so lets take it out

config/application.yml.example

@@ -127,6 +127,9 @@ defaults: &defaults
 
   # The path to the sendmail binary. Ignored if mailer_method is not set to sendmail
   sendmail_location: '/usr/sbin/sendmail'
+  
+  # Set this to true if you want to use exim and sendmail
+  sendmail_exim_fix: false
 
   # Authentication required to send mail. Use one of 'one', 'plain',
   # 'login' or 'cram-md5'. Use 'none' if server does not support

config/initializers/mailer_config.rb

@@ -17,7 +17,8 @@ Diaspora::Application.configure do
     elsif AppConfig[:mailer_method] == "sendmail"
       config.action_mailer.delivery_method = :sendmail
       config.action_mailer.sendmail_settings = {
-        :location => AppConfig[:sendmail_location]
+        :location => AppConfig[:sendmail_location],
+        :arguments => "-i" if AppConfig[:sendmail_exim_fix]
       }
     else
       config.action_mailer.delivery_method = :smtp