[email protected]:
> On 02-04-2022 4:19 pm, Viktor Dukhovni wrote:
> > On Fri, Feb 04, 2022 at 04:16:47PM -0500, [email protected] wrote:
> >
> >> In using address verification it is very clear that any "reject" from
> >> the remote mail server would result in the email triggering the
> >> verification to be rejected. But i do not see anything about 4xx defer
> >> responses. What if the remote server is doing gray listing and
> >> responds with a 4xx during the probe process?
> >>
> >> How does postfix handle this? Does it also give the email triggering
> >> the verification a 4xx or rejects it with a 5xx?
> >
> > Postfix does the only right thing.
>
>
> That is a confusing response. It almost reads like a joke but Viktor never
> jokes.
> Which is the "right thing"?
Postfix replies with a hard reject when the probe fails with a
permanent error, otherwise Postfix replies with a soft reject.
Wietse
