You can add an address to your Senders list to tell Spamfire to accept or reject messages from that address in the future. Info
Field popup menu - Choose which header field of incoming messages should be checked for a match. Generally, you will select the "From" field. But some mailing lists may require that you select the "Reply-To" or "Sender" field.
Address - Specify the address that should be matched. You can enter a complete email address or just the domain name portion of an email address.
Kind of Sender popup menu - Specify whether the email address should be treated as a Friend or Mailing List (always accepted) or a Spammer (always rejected).