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Re: [Jmap] Address Validation (was Re: Submission)

"Adrien de Croy" <adrien@qbik.com> Tue, 25 April 2017 16:06 UTC

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From: Adrien de Croy <adrien@qbik.com>
To: Paul Smith <paul@pscs.co.uk>, Cyrus Daboo <cyrus@daboo.name>, "jmap@ietf.org" <jmap@ietf.org>
Date: Tue, 25 Apr 2017 16:06:27 +0000
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Subject: Re: [Jmap] Address Validation (was Re: Submission)
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------ Original Message ------
From: "Paul Smith" <paul@pscs.co.uk>
To: "Adrien de Croy" <adrien@qbik.com>; "Cyrus Daboo" 
<cyrus@daboo.name>; "jmap@ietf.org" <jmap@ietf.org>
Sent: 26/04/2017 2:57:10 AM
Subject: Re: [Jmap] Address Validation (was Re: Submission)

>On 25/04/2017 15:37, Adrien de Croy wrote:
>>
>>I'd expect a lot of servers don't honour SUCCESS DSNs for a number of 
>>reasons (privacy, spam avalanche etc).
>
>I'm not sure of that - is it any worse than accepting a message with a 
>2xx response?

it sure is, especially if the return path is invalid / spoofed / victim.

It's a whole new email, rather than a protocol response code.


>'Delivered' means it has been dumped in a user's mailbox, not that it 
>has been read or anything so it doesn't give any more information other 
>than the final SMTP server accepting the message.
>
>If it does cause problems, those would probably happen for any scalable 
>delivery notification system dreamt up for JMAP as well.

If it uses emails for messages yes.  Which it probably would.

Adrien

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