Re: [Emailcore] Delivered-To issues

[Dave Crocker <[e-mail]>]

On 12/31/2020 1:09 PM, Dave Crocker wrote:
> 3. ?


Drat.  Just started to throw some basic text into a draft and I've 
already run into an issue that might or might not creates some challenges.

Rather than pursue this in terms of fine-grained details, I'll ask you 
all to first consider what information we would like a recipient's MUA 
to have access to.  Then we can worry about how to engineer the details.

In the simple case, the RCPT TO contains an address and, indeed, the 
recipient's MUA resides at that address.  The message has gone through a 
single SMTP posting/delivering sequence.

Mailing lists (including Aliases) and other post-processing facilities, 
make things more interesting.  They create multiple posting/delivery 
sequences.  The final recipient address is not what the author generated 
in the initial RCPT TO field.

      Should the recipient's MUA have access to the /sequence/ of RCPT TO
      addresses used to get to them?

      Should they have only the final one?

      Should they have only the original one?

      Should they...?


Thoughts?


d/
-- 
Dave Crocker
Brandenburg InternetWorking
bbiw.net