vvrpgsporcupineorg fmsfzcleechboxnet 2 tested 4000 smtpd processes limit saw much 2000 smtpd processes messages tend pile incoming without moved active processes drop back trigger reload mail moved active delivered easily obviously box maxes reaches 2000 amount postfix tweaking change spreading load disks help wietse thu 07 aug 2008 114739 0500 high concurrency smtpd issues