SAV Sender Address Verification

SAV is a lightweight, fast and reliable Sendmail milter that implements a real-time Sender e-Mail Address Verification technology. This technology can stop some kinds of SPAM with a spoofed sender's e-Mail address.

Also it implements a real-time Recipient e-Mail Address Verification technology. It can be useful if your machine is a backup MX for the recipient's domains or if your machine forwards all e-Mail messages as a relay host for your domains to another internal or external e-Mail servers.