I have a 'border' postfix MTA that doesn't host any mailboxes, indeed it doesn't even know what the valid usernames are for the domain.
It merely serves to check messages for viruses, and block DoS attacks. As such, I need it to perform aliasing *only* on messages generated locally by system services, such as 'cron'. How do I configure that? I.e. that if a message is submitted locally by a service such as 'cron' or 'logwatch', it should be aliased to an internal mailbox name on an Intranet server... Thanks, -Philip
