Keld J?rn Simonsen:
> On Mon, Jul 13, 2009 at 06:58:28PM -0400, Wietse Venema wrote:
> > Keld J?rn Simonsen:
> > > Is there a way to disambiguate between DNS timeouts and DNS errors,
> > > and discard the latter?
> >
> > Postfix is only the messenger of the bad news. When the server
> > responds, Postfix acts accordingly. When the server does not
> > reply, Postfix assumes that this is a temporary error, because
> > assuming otherwise would cause a lot of mail to fail.
>
> Yes, but there are two types of bad news: one is that we do not know if
> everything is fine, timeout, and the other that we positively know
> something is wrong. I understand that in both cases postfix gives a 450
> code, and that there is no way in postfix to change this code. Is that so?
Some people are thick enough that they need everything spelled out.
OK, here goes:
1) The server replies with "good news". Postfix replies with good news.
2) The server replies with "bad news". Postfix replies with 5xx.
3) No server reply. Postfix replies with 4xx.
Is this finally clear?
Wietse
