ietf-openproxy
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RE: SMTP Use Cases

2004-10-22 07:28:43

jfc,

I do not see any of these examples (which are much needed) 
being an OPES. 
They are middlebox (RFC 3234) services. None of them are on the fly 
protocol add-on functions in a store and foreward system.

RFC 3234 lists in the catalogue of middleboxes in section 2.10
for example the Application Layer Firewall which an SMTP
client/server pair or a Web proxy agent.

I think this example can help us to find the way from our
recent HTTP work to the SMTP work now.

The SMTP client/server in the Application Layer Firewall is
the OPES processor in the OPES context that talks to a callout
server as before.

While RFC 3234 lists protocol checks and other features that
ensure the validity of the application. Exactly what we expect
all the time from the OPES processor; that part is responsible
for sending valid SMTP (or HTTP) to its peer.

Content adaptation is being done in the callout server in
an OPES scenario.

If you disagree, what kind of SMTP use cases do you see for OPES?

Regards
Martin


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