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:

• Create a normal user account. Call it spam@example.com for example.
• Create a mail filter that if an email is over 1 Byte it is discarded.

This will discard all mail sent to this account.