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Re: [ietf-smtp] [Proposal] confusing parts of the mail system, was 250-MARKDOWN

2019-01-10 15:07:40
In article 
<13753(_dot_)1547150864(_at_)turing-police(_dot_)cc(_dot_)vt(_dot_)edu> you 
write:
On Thu, 10 Jan 2019 11:55:53 -0800, John Bucy said:

The MSA could call ahead/cut-through, doesn't exim do that? That might also
allow for the mua to throw an error ui at the user if they fat-fingered the
recipient rather than getting a bounce back later.

No.

Consider this reply.  I'm in Comcast cable territory, which means that I can
only do outbound port 25 to Comcast/Xfinity servers.  So my only realistic
way to get this mail out is to 587 it to Google's submission servers.

Now how do I "call ahead" for the cc: that's going to John Levine?

The theory is that you submit the whole message to Google and it
probes the recipients before it accepts the message, but now you have
the added issue of how to report back that receipient A can handle it
but recipient B cannot.

I'd really rather the duct tape be applied to make external-body work
better.

R's,
John

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