What can the Lotus SMTP MTA do to prevent SPAM?
From a member of Lotus’ SMTP team: The term ‘SPAM’ covers such a broad spectrum of SMTP mail ‘attacks’ that there is no easy solution to the prevention of ‘SPAM’. The MTA provides rudimentary capabilities to deal with 2 types of ‘attack’. 1. Relays These are messages sent to your SMTP server from an outside source that are not destined for a local recipient, but are for another external SMTP address. This results in your SMTP server ‘relaying’ the message onto the external destination. Before the explosion of the Internet and the use of DNS to provide 1 hop source to destination routing of messages this was an acceptable practice on the Internet. Infact the original concepts relied on it to provide source to destination routing across many interconnected hosts. However the ability to accept and transfer ‘Relay’ messages brings 2 problems to the modern Internet SMTP host administrator.
From a member of Lotus’ SMTP team: The term ‘SPAM’ covers such a broad spectrum of SMTP mail ‘attacks’ that there is no easy solution to the prevention of ‘SPAM’. The MTA provides rudimentary capabilities to deal with 2 types of ‘attack’. 1. Relays These are messages sent to your SMTP server from an outside source that are not destined for a local recipient, but are for another external SMTP address. This results in your SMTP server ‘relaying’ the message onto the external destination. Before the explosion of the Internet and the use of DNS to provide 1 hop source to destination routing of messages this was an acceptable practice on the Internet. Infact the original concepts relied on it to provide source to destination routing across many interconnected hosts. However the ability to accept and transfer ‘Relay’ messages brings 2 problems to the modern Internet SMTP host administrator. Firstly it results in the local organization incurring transfer costs to handle messages that have no
