Freek Dijkstra:
> Hi all,
>
> Postfix does not support international email addresses, such as
> jos?@example.org, as described by RFC 6530-6532. To be precise, the
> SMPTUTF8 (previously: UTF8SMTP) SMTP extension is not announced in the
> EHLO response.
>
> Wikipedia [1] says it is "under development", but given the response to
> the topic "Question about supporting EAI in postfix" about a year ago
> [2] I get the impression it is not.
>
> Would anybody be aware of external contributions to Postfix for this
> feature? I have not found anything on the web.
With RFC 6530 an SMPTUTF8-capable MTA can't forward email with an
SMPTUTF8 sender address to a non-SMPTUTF8 MTA. It must return such
email as undeliverable. See sections 8 and 9.
In other words, email with your "international" sender address will
be undeliverable to vast portions of the Internet. Is that what you
want?
And that is just one problem with SMPTUTF8.
Earlier Internet email extensions such as MIME were careful to
maintain interoperability with existing infrastructure, providing
a path for gradual migration from the present to the future.
UTF8SMTP tried to provide a path for gradual migration but failed.
SMPTUTF8 provides no migration path as noted above - it returns
mail as undeliverable. Without a path for gradual migration towards
internationalized email, I expect that SMPTUTF8 will fail, too.
Wietse
