Demi M. Obenour:
> >> I am not sure whether adding such a feature motivated by just the
> >> presented use-case is warranted.
> >
> > My take: not if it only solves only one problem.
>
> I agree. In particular, we should avoid a pile of features with very
> narrow use-cases.
I think that this narrow problem can/should be solved with a
combination of smtp_delivery_status_filter that changes 5XX message
size errors into 4XX, plus an smtp_fallback_relay with more generous
size limits.
Or just use that fallback relay all the time.
Wuetse