Anti-Spam action parameters

The following Anti-spam actions are available when configuring the SMTP module,. 

accept - Email is accepted without scanning for viruses.

scan - Email will be scanned for viruses. Infected objects will be cleaned, unless av_clean_mode parameter value is set to none.

defer - When defer is selected, the email will be returned to the mail server queue and the mail server will try to deliver it later (based on server settings). This feature allows more time for virus signatures to update before an email is sent, reducing the chance of a false positive. Your mail server must support this feature for it to function properly.

reject - Email evaluated as infected will not be delivered. The sender will receive a notification about failure of delivery.

discard -  Email evaluated as infected will not be delivered. The sender will not be notified.