The following patch is able to anonymize the entire mails routing path.
Reason about this feature is the following:
- Customers privacy preservation
- Nullify RBL (Source Path) SpamCheck for RBListed ISP connection (fastweb.net, tim.it, etc etc).
In the diff patch attached file you can find some commented code block. You can store an original email copy, if you would to save it, commenting out code lines (not suggested in a thousand-emails-for-day environment).
Download qmail-scanner.queue.diff.patch