How to reject mail from blacklisted addresses

[RobertS]

Hi,

has anybody an idea how to reject mails from blacklisted addresses istead of acepting them and keeping in quaratine?
The sender should know that his mail was not deliverd. For "normal spam" this may is not required, but for blacklisted addresses this might be usefull.

regardds
Robert

[shawniverson]

You would most likely need to accomplish this using the MTA (postfix). MailScanner cannot do this because it is not an MTA.