Re: [exim-dev] [Bug 1516] SMTPUTF8 Extension for Internation…

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Author: Viktor Dukhovni
Date:  
To: exim-dev
Subject: Re: [exim-dev] [Bug 1516] SMTPUTF8 Extension for Internationalised Email Addresses
On Thu, Aug 14, 2014 at 09:57:56PM +0100, Mike Cardwell wrote:

> Just for an extra bit of information. Postfix already supports this:
>
> http://www.postfix.org/SMTPUTF8_README.html


Still a work-in-progress. Wietse frowns on half-measures, we do
it right, or not at all. Thus SMTPUTF8 is still only in a development
release, and may take multiple dev release cycles before it appears
in a stable release.

The easy part is supporting the protocol. The hard part is handling
UTF8 in all the legacy external interfaces:

    * Access table lookups, and various SQL/LDAP APIs.
    * TLS certificate name checks
    * Address rewriting
    * Mail logs
    * mailq(1) output
    * LDA interfaces


I'd like to encourage the Exim developers to not under-estimate
the complexity of this "feature". It needs to be thought about
carefully, and developed/deployed with great care.

This a major architectural change, and must not be a quick fix.

-- 
    Viktor.