Re: We need an architecture, not finger pointing.

[Ted Lemon <ted.lemon@xxxxxxxxxxx>]

On Oct 28, 2015, at 2:02 PM, John R Levine <johnl@xxxxxxxxx> wrote:

You could, but that now requires more manual work as people ask why didn't my message go through, blah blah blah.  Having run lists for my church and other civilians for a long time, I speak from direct experience here.

And this is because the SMTP store-and-forward model requires that error messages be delivered asynchronously, which is another architectural problem with SMTP.   If error messages could be delivered at the moment of transmission rather than later, at least most of the time, this wouldn’t be an issue.   It’s entirely possible to do it, but requires a little more sophistication than Postfix or sendmail have.