Andreas Pettersson wrote:
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
chkuser for qmail, think 'Milter-Ahead' on steroids.
http://www.interazioni.it/opensource/chkuser/
If you want to check a static list of users, try validrcptto,
http://qmail.jms1.net/patches/validrcptto.cdb.shtml
I use both, they work great, using SA to stop the backscatter after the
fact is not the best way to go about this. I wouldn't worry about the
high load on your FirstClass system, stop the spam from getting past the
qmail server and your load will likely drop considerably. If you get as
much spam as we do anyway ;^)
DAve
--
Three years now I've asked Google why they don't have a
logo change for Memorial Day. Why do they choose to do logos
for other non-international holidays, but nothing for
Veterans?
Maybe they forgot who made that choice possible.
