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.
Wietse
