How to create a /dev/null account or spam trap?
Creating a /dev/null account
Sometimes you'd like to create an account where mail is black holed or sent to /dev/null. One way to do this is: 1) Create a normal user account. Call it spam@example.com for example. 2) Create a mail filter that if an email is over 1 Byte it is discarded. This will discard all mail sent to this account.