> From: Mohsen BANAN-Public <[EMAIL PROTECTED]>
>
> Existing SMTP/IMAP/TCP technology is not well suited for
> mobile and wireless environments where bandwidth and
> capacity are always limited and precious.
>
>
> More efficient protocols are needed to address the new
> reality of mobile and wireless networks. I am seeking
> open protocols which are better suited to address the
> requirements of mobile and wireless networks.
we are in agreement so far. however I would say that the new
protocols need to operate effectively not only in a
mobile/wireless network, but also in a wired network, or in
a mixed network that consists of both wireless and wired links.
> The key functional requirements for the protocols that
> I am seeking are:
>
> - Provide for the submission and delivery of short
> (4 kilobytes or less) Internet e-mail messages
> with the same level of functionality (or higher)
> that the existing SMTP protocols provide.
>
> - Provide the same (or better) level of reliability
> and security that the existing SMTP protocols provide.
>
> - Make reasonable trade-offs between specification complexity,
> implementation complexity, extendibility, scalability and efficiency.
>
> - Provide the required efficiency characteristics. These include:
> minimizing the number of transmissions, minimizing the number of
> bytes transmitted, minimizing the latency of message
> submission and delivery.
let me suggest a few additional requirements:
- high degree of functional compatibility with existing mail protocols
(SMTP/MIME/POP/IMAP) so that there is not a lot of information
lost when mail is gatewayed between the two environments; also
so that I18N is supported in a way compatible with existing standards.
- congestion avoidance that competes fairly with TCP
- ability to resist denial-of-service attacks that attempt to consume
server connection/session state (similar to SYN flooding attacks)
Keith
