Hugo Monteiro wrote:
Hell all,
I was wondering if anyone has tried, or knows how, to accomplish a
fake qmail-ldap cluster system using only one machine.
Below i try to explain what i intend with this setup;
What:
Set qmail-ldap to listen for smtpd connections, and then pass the
messages to an also locally configured qmqpd server, in the way that
the clustering support works. The final delivery would be made only
after the qmqpd server passed the message to qmail-queue, etc, etc.
Why:
I've been using inter7 simscan for integration with content filtering
procedures (ClamAV for antivirus and DSPAM for antispam). DSPAM has a
great set of features in what it comes to user interaction
(retraining), but there is a small problem when DSPAM is run in the
same system which acts as MX.
DSPAM, while working with simscan, will step in before local delivery.
This means that messages with multiple recipients will not be properly
handled, since that at that point there is only 1 message and a list
of recipients. The use of DSPAM makes the assumption that you will in
fact have separate spam dictionaries and actions per user. Therefor
the message cannot be held captive or tagged, since one mans SPAM is
another mans HAM.
The way i found, in theory, to handle this situation is to have DSPAM
acting on the qmqpd instance, which will get 1 copy of the message per
recipient from the actual MX.
Problem:
I have previously set qmail-ldap clusters, so i tried the same
approach. I have installed 2 separate instances of qmail-ldap on the
same machine, activating only qmail + qmail-smtpd on one (MX) and
qmail + qmqpd on the other ("LDA"). No matter what i change on the
control files (me, locals and rcpthosts) and/or the IP address on
which the services would bind (external IP address or localhost), the
messages would always get deferred stating that the message was
looping since it already has the clusterhost delivery-to header.
(qmail-forward: fatal: This message is looping: it already has my
Cluster-Delivered-To line. (#5.4.6))
Question:
Can anyone enlighten me on some sordid detail that i've missed?
Thanks in advance,
Hugo Monteiro.
Hello all,
just to let know that the problem i described is solved. When i
installed the second qmail-ldap instance, by mistake i forgot that
simscan (alternate qmail-queue) had the old path to qmail compiled in.
Not only that, by i was in fact using the simscan install from the first
instance. Those two mistakes together would make the messages received
by the second instance to be re-injected into the first instance queue,
and therefor the loo error message.
DSPAM is now working perfectly, even in the case of messages with
multiple recipients. :)
Regards,
Hugo Monteiro.
--
ci.fct.unl.pt:~# cat .signature
Hugo Monteiro
Email : [EMAIL PROTECTED]
Telefone : +351 212948300 Ext.15307
Centro de Informática
Faculdade de Ciências e Tecnologia da
Universidade Nova de Lisboa
Quinta da Torre 2829-516 Caparica Portugal
Telefone: +351 212948596 Fax: +351 212948548
www.ci.fct.unl.pt [EMAIL PROTECTED]
ci.fct.unl.pt:~# _
