I'm trying to figure out how spamfilter works.
Actually I have to create a spamfilter user to use white/blacklist.
But there is not check againt this user as I can see, so, firstname.lastname@example.org
can create a user called email@example.com
Is this ok ? Is not possible to use whitelist and blacklist with no need to create spamfilter user?
Is possibile to set postfix whitelist/blacklist privileges to certain users?
For example, VPS administrator should be able to filter at postfix level, hosting users should not.