Problems with the original SMTP model in the Modern World

One of the problems with the SMTP (Simple Mail Transport Protocol) model in the modern world is that although consumers get their eMail using POP/IMAP they still send eMail using SMTP. The problem with this is that receiving SMTP servers have no way to distinguish a connection from a real eMail server from a virus infected spam bot. The SMTP protocol has evolved though and there are not new alternatives that have been standardized and we believe that using the existing RFC standards we can help isolate spam bot traffic so it can not sent from our network using SMTP. The trick is to prevent consumer’s computers from talking to servers other than the outgoing SMTP server they are supposed to use. This can be accomplished by using SMTP Submission port 587 instead of SMTP on the standard port 25.
 
Submission can be as simple as SMTP on an alternate port without a password but restricted to the ISPs customers, or it can be authenticated SMTP open to the world but requiring a user name and password to access. The best model to use is authenticated SMTP requiring a user name and password. RFC 4954 and 5068 cover “Internet Best Current Practices for the Internet Community” in regards to outgoing eMail.