Dropping mail?

[smanjourides]

I'd like to have certain addresses 'eat' email (ie. just discard it). So, I
setup an account with a ".qmail" file which has one line "|/dev/null".

QMail complains "deferral: /bin/sh_/dev/null:_cannot_execute".

What is the most effecient way to setup QMail to discard email?

- Scott