The eXpurgate reject mode
Let spam just bounce off
The reject mode enables companies to identify and reject spam e-mails before they penetrate through to the corporate network. This spam checking process is carried out during the current SMTP dialog that controls e-mail traffic between e-mail servers. If an e-mail is classified as spam, the delivery attempt is confirmed negatively by means of a permanent SMTP error message. Due to the way eXpurgate works, this means that individual e-mails are hardly ever wrongly classified, you can be confident that no business-relevant e-mails will be rejected.