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Re: [EAI] POP/IMAP authentication?

Alexey Melnikov <alexey.melnikov@isode.com> Sat, 04 July 2009 22:02 UTC

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Date: Sat, 04 Jul 2009 23:03:04 +0100
From: Alexey Melnikov <alexey.melnikov@isode.com>
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To: Shawn Steele <Shawn.Steele@microsoft.com>
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Subject: Re: [EAI] POP/IMAP authentication?
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Hi Shawn,

Shawn Steele wrote:
>
> I’m leaving my comfort area J
>
>  
>
> Replying to Yao Jiankang’s draft, it occurred to me that the 
> alt-address probably needs to be allowed on authentication for email 
> accounts during the “transition period”.  So if I have a Unicode 
> address for my EAI mailbox, I may need to use the alt-address to logon 
> from my non-EAI-aware IMAP/POP client (might take a while to update my 
> phone).  I didn’t see that discussed in a quick peek at the IMAP/POP 
> drafts.
>
Authentication identities used by IMAP/POP servers don't have to look 
like email addresses at all (whether they are ASCII only or EAI email 
addresses).
In practice they frequently are, but this is an implementation detail. 
For example IMAP doesn't prevent use of LDAP DNs as authentication 
identities.


RFC 5255, section 5.1 talks a bit about UTF-8 authentication identities 
(userids). I suppose EAI IMAP document needs to say that it is updating 
RFC 5255.

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