Nicolas Boullis:
> Thanks Wietse for those suggestions, I did not consider using a
> smtpd_proxy_filter.
> However, I had a look at smtpprox as you suggested but, as far as I can
> see, it cannont behave as a Y proxy.
This takes a few lines of code.
> I could consider writing a Y proxy myself, but I think this would be
> very error-prone. For example I'm not sure what I should do if one
> destination suceeds while the other one fails.
Make the deliveries in parallel, and abort (do not send ".") after
the first error. When you send ".", do that first for the destination
that needs it most.
Or use Viktor's suggestion with sender_bcc_maps and smtp_generic_maps.
Wietse
