Re: epp via smtp

["Edmon Chung" <edmon@neteka.com>]

It is honestly, fairly simple.  Reason being ease of implementation for the
registry as well as the registrar.  Your questions indicate that a more
comprehensive approach, or perhaps I should say a more "customized" approach
designed for EPP.  We could start with a very simple definition and add to
it.  In terms of practicality, we must ask what makes the most sense to a
registry and a registrar.  In terms of an elegant solution, we could utilize
the headers and MIME much better, or even specify a new ESMTP extension to
be used.

What are the thoughts from the group in general?

Anyway, in terms of our very simple implementation, it is really just using
the SMTP as a transport mechanism and then parse out the body portion and
dump it back into the regular EPP gateway.  ie.  the XML messages are
encoded "as is" in the body of the email.  Therefore, to answer your
questions:

----- Original Message -----
From: "Eric Brunner-Williams in Portland Maine" <brunner@nic-naa.net>
> Is a single EPP message is contained within a single SMTP message?
>
> Does a single SMTP message contain only one EPP message?

One SMTP message may contain multiple EPP messages.  Transaction IDs are
used.

> What are the defined values for the Content-Type header field?

The headers are not used as identifiers within the EPP context except that
the subject identifies that it is an EPP message.

> What are the defined values for the Content-Transfer-Encoding header
field?

8bit

> What are the defined values for the Mime-Version header field?

None

> Is the mechanism defined in ESMTP used and if so, what are the one
> (or more) extensions to the SMTP service?

No.

> Is SMTP over TLS defined?
>
> Are other mechanism(s) defined for adding authentication and privacy to
> messages?

Only PGP is used.

> Are the Message-ID and In-Reply-To headers used?
>
> How are the "From:", "To:", "Cc:", etc headers used?

All headers are used as Email message headers are today.

> Are you 2821-strict or 821-tolerant w.r.t. these?
>
> Is any of the cannonical boiler-plate disturbed? IANA? Security? I18N?

When i18n is introduced, the EPP messages will contain 8bit data and use
UTF8 as the encoding.

Again, I must stress that our approach had simplicity in mind.

Edmon


> London was fun.

Europe is generally more fun than the US ;-)

> Eric
>