A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Email Address Internationalization Working Group of the IETF.
Title : SMTP extension for internationalized email address
Author(s) : J. Yao, W. Mao
Filename : draft-ietf-eai-smtpext-01.txt
Pages : 15
Date : 2006-7-26
Internationalized email address includes two parts, the local part
and the domain part. The way email addresses are used by protocols
are different from the way domain names are used. The most critical
difference is that emails are delivered through a chain of peering
clients and servers while domain names are resolved by name servers
by looking up their own tables. In addition to this, email transport
protocols SMTP and ESMTP provide a negotiation mechanism through
which clients can make decisions for further processing. So
internationalized email address is different from the
internationalized domain name (IDN). It can be solved by exploiting
the negotiation mechanism while IDN can not use the negotiation
mechanism. So internationalized email address SHOULD be solved in
the mail transport-level using the negotiation mechanism, which is an
architecturally desirable approach. This document specifies the use
of SMTP extension for internationalized email address delivery. It
also mentions the backward compatible mechanism for downgrade
procedure, as specified in an associated specification. The protocol
proposed here is MTA-level solution which is feasible,
architecturally more elegant, and not as difficult to deploy in
relevant communities.
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