Jaysds1: You could search for a solution: search.php?st=0&sk=t&sd=d&sr=posts&keywords=Ubuntu
Thank you for that, I have to enter a command every time I restart Ubuntu. But still it works
Thank you all, the reason behind MTA not starting with Ubuntu 12.04 was that in this version Ubuntu disabled the ability of one application to access another for security reasons which can be disabled by a root command.
echo 0|sudo tee /proc/sys/kernel/yama/ptrace_scope