Re: 2821bis and address rewriting

On Tue, 20 Nov 2007 19:02:01 EST, Hector Santos said:
> Dave Crocker wrote:
>
> > Almost makes one wish that real bounce messages were distinguished by 
> > something other than the 2821.mailfrom address...
> Isn't this already done by most systems via the x822.From header address 
> user part having mainly 'mailer-daemon'?
Yes, but that's a layering issue - you really *don't* want to have to poke
around in the 822 headers to find a 821-style return address (especially
since if you *do* that sort of grovelling, you will almost certainly Do The
Wrong Thing if you ever get a bounce with an 822-From *other* than 
Mailer-Daemon).

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