On Thu, 2015-07-16 at 10:21 +0100, David Woodhouse wrote:
> On Mon, 2015-07-13 at 00:44 +0300, Laurent Pinchart wrote:
> > 
> > The first topic we're trying to address is recruitment. From that point of 
> > view, giving as much feedback as possible to newcomers is good as long as we 
> > can make the automatic feedback constructive. An automated reply along the 
> > lines of
> > 
> > "You have tried to send a patch through e-mail to the foo@v.k.o mailing list. 
> > We have detected that your e-mail includes HTML content. This is not allowed 
> > for the reasons explained at [...]. Please configure your e-mail client to 
> > send plain text only and resend the patch. Instructions on how to do so far 
> > popular e-mail clients can be found at [...]"
> 
> Yeah, at the moment I believe 'unacceptable' mail to vger lists just
> gets black-holed. Leaving users wondering WTF they did wrong. Or just
> wondering why they didn't get any responses.
> 
> It would be much nicer to do the same tests at SMTP time, giving the
> rejection immediately.

I'll let DaveM speak for himself on vger, but the reason I don't do this
type of thing at SMTP time is that it holds the connections open and you
can easily swamp the system.  If you queue the scans, you have a much
tighter control on your machine load (admittedly my "cloud" system is
still a single processor i586 so I might be slightly behind the
technology curve).

James