From: Alex van den Bogaerdt (alexergens.op.het.net)
Date: Fri Jan 09 2004 - 15:18:20 CST

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On Fri, Jan 09, 2004 at 04:06:20PM -0500, Jim Trigg wrote:

> Let me explain my rationale for sending email from the "wrong domain".
> I have multiple email addresses. Most are hosted on a single server,
> but a few are hosted elsewhere, including freemail services. I want to
> handle all of my email through a single MUA, so I forward all of my mail
> to a single place. But I want to reply to messages with the same email
> address as they were sent to. I don't know of any SMTP-Auth servers for
> Yahoo; you can only originate messages through Yahoo's servers by using
> Yahoo's webmail AFAIK. How am I supposed to reply to messages sent to
> my Yahoo address using the mail client I received them on without
> spoofing the sender but sending them through my personal domain's MTA?
> How can this be addressed with SPF?

Some of the options (not all of them being very plausible):

1: put enough pressure on yahoo and get your auth smtp

2: put enough pressure on yahoo and have them use "?all", not "-all".

3: reply using your real address, and set the "Reply-To: " header
   to your yahoo address

   variations:
   3b: use "From yournameyourdomain" and "From: youyahoo.com"
   3c: use "On-Behalf-Of: youyahoo.com" or whatever it is

There will be more options and variations.

cheers,
Alex
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