On -10.01.-28163 20:59, Maciej Uhlig wrote:
> Charles Marcus - 2014-05-14 19:26:
>> On 5/14/2014 12:29 PM, Maciej Uhlig <maciej.uh...@us.edu.pl> wrote:
>>> Reindl Harald - 2014-05-14 17:04:
>>>> the mail cient on the receiver shows the FROM-HEADER and not
>>>> the Return-Path
>
> He said the mail client doesn't show the Return-Path and I said it's not
> true because Thunderbird shows not only the From header line but also it
> _does_ show Return-Path line. This is simple logic coming from everyday
> observation.
Allow me to both correct Haralds sentence, and provide you with a
suitably picky answer to your initial question ("May I ask to add
Return-Path: some meaningful header line"):
a) MUAs will use the Header-From: (and a variety of other headers, like
Reply-To: or, if "Reply to all", To: and Cc:) to determine the
address(es) to send replies to, not the Envelope-From_ like automated
processing should.
b) Your (sender-side) software CANNOT generate a Return-Path: header,
because it is generated (if at all, as that functionality is
optional) upon final delivery on the receiver's side (MDA).
Regards,
J. Bern
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