Hi, > would be for instance, Viagra, which does not exist. We needthe spam > software to realize that this user does not exist and register the email as > spam.
You don't need SpamAssassin to do this. Most modern mail servers (postfix, sendmail, Exchange) can do this by default. Remove the default forwarding of non-existent addresses from being delivered to a general postmaster account, and explicitly define all valid addresses that should receive mail. The rest will bounce. Regards, Alex
