I was having a hard time stopping mail (read spam) beeing send to users like [email protected] and [email protected] and [email protected]. (non existing mail accounts) Guess what.. I've found a fix (you probably knew this already) After adding: local_recipient_maps = $alias_maps to my /etc/postfix/main.cf and doing a postfix reload mail send to non existing users like uucp, mail and webmaster are now nicely rejected
