Dominic Raferd:
> On Sat, 25 Jan 2020 at 15:47, Wietse Venema <[email protected]> wrote:
>
> > Wietse Venema:
> > > Dominic Raferd:
> > > > When postscreen rejects an incoming email because it exceeds the
> > dnsbl/rbl
> > > > score, how does it decide which rbl to report back to client as the
> > cause
> > > > of the rejection - since it only reports one? Is it just the first one
> > to
> > > > respond? Or random?
> > >
> > > It replies with the DNSBL site that has the biggest weight.
> >
> > This behavior was introduced on 20120222:
> >
> > Cleanup: when multiple DNSBLs block an SMTP client, the
> > postscreen "reject" message now gives credit to the DNSBL
> > with the largest weight, instead of the DNSBL that replies
> > first. File: postscreen/postscreen_dnsbl.c.
> >
>
> And if they have the same weight then random or the one that replied first?
> Or the one that gave the most hits (response codes)?
It initializes (sitename, weight) as (null, null) then updates that
whenever a response has a larger weight. Thus, it returns the first
name of all the DNSBL sites that have the largest weight.
I see no reason to reveal more detail to spammers. Authorized
personnel can get those details from the maillog file.
Wietse
