[zimbatm]

Having local mailboxes in each server is not really useful in a cloud setup with hundreds of machines. But it's not a reason to silence the output; something bad might happen and only stdout/stderr might give you an anwer of what exactly is going wrong.

Instead use https://github.com/zimbatm/logmail. It's a `sendmail` replacement that forwards everything to syslog. Then forward all your syslogs to a central place an you can capture and analyze these messages.