The MX SPFBL filtering service eliminates SPAM even before it reaches your network.
This is possible by changing your domain’s DNS records, causing the emails to be forwarded to the SPFBL servers and then forwarded to your MTA.
In this way, SPFBL servers eliminate unwanted e-mail and only transmit legitimate e-mail.
The SPFBL system uses the only Brazilian spam list (DNSBL), which is updated through the contribution of thousands of users using P2P technology. Allied to intelligent algorithms presents a very low false positive index. In this way, SPFBL servers eliminate unwanted e-mails and only transmit legitimate e-mails.