Ole Nomann Thomsen wrote:
I run a qmail frontend for a FirstClass system. The qmail accepts mail
for
about 500 domains, hosted on the FirstClass system, and scans them
with SA.
In then injects them into FirstClass. If the domain is known, but the
user is
wrong (as in "[EMAIL PROTECTED]") the mail is rejected on
smtp-level by FirstClass. Qmail then generates a bounce back to the
original
sender. In case of spam, origninal sender is faked and we have
backscatter.
I know qmail-ldap could be of some use here, but I have no way of setting
up an ldap-server that knows legitimate FirstClass adressess
(FirstClass itself
could do it, but it is running at 99% capacity most of the time, so no
go.
Exporting adresses from FirstClass won't do either, as there are
forum-adresses
that wont export). This is a classic "MTA frontend" problem, but I'm
afraid I'm
stuck with it.
While I don't really see why ldap isn't an option, even with an 99%
load, callout might be the solution.
However, I don't run qmail but here's how it works with exim
http://www.exim.org/exim-html-4.62/doc/html/spec_html/ch39.html#SECTcallver
hälsningar,
Andreas
