Mail filtering - amavisd-new - configuration instructions include unnecessary step

[Darryl Weaver]

https://help.ubuntu.com/12.04/serverguide/mail-filtering.html

Section: Amavisd-new

Text: Bouncing spam can be a bad idea as the return address is often faked. Consider editing /etc/amavis/conf.d/20-debian_defaults to set $final_spam_destiny to D_DISCARD rather than D_BOUNCE, as follows:

$final_spam_destiny = D_DISCARD;

This step is unnecessary as the final_spam_destiny variable is set to D_DISCARD in file: /etc/amavis/conf.d/21-ubuntu_defaults, which overrides the above file.