Short description of VisNetic MailScan for SMTP 4.5: Unsurpassed Email Protection: VisNetic MailScan for SMTP offers incredible network protection and an unsurpassed ability to detect, detain and delete infected Email. The revolutionary software has the ability to automatically upgrade and reconfigure itself with updated anti-virus information. VisNEtic MailScan also prevents inappropriate content from entering your network with a great content control feature.