Hello, have setup courier-proxy and it reject based on <zen.spamhaus.org> and forward the connection to the appropriated mbox-Server which is working now.
The setup can be enhanced by adding more seperated courier-imap-proxy
and courier-mta-proxy machines in parallel if the number of my customers
(or the incoming messages) increse.
The physicaly setup is, that the <mx-NN> and <imap-NN> are connected
with one GE interface to a switch which is directly connected to my
network router (CISCO 7600) and with the second GE interface to an
internal switch (private network) and the <pgsql>, <dns-internal> and
the <mbox-NNN> servers.
So, currently I have
1 x Internet Access 1 Gbit Non-Redunant
(will increase it FTTH is added; currently only WLAN)
1 x CISCO 7600
(will be replaced because it is ways to small)
1 x courier-{imap,mta}-proxy IBM x335 (2x 3,0 GHz, 2 GB Ram)
2 x pgsql (+slony) IBM x335 (2x 3,0 GHz DualCore, 4 GB Ram)
2 x bind9 (internal) IBM x335 (2x 2,4 GHz, 2 GB Ram)
16 x mailbox servers IBM x345 (2x 2,4 GHz, 4 GB Ram)
Each of the mbox-NNN servers hold currenly 1200 accounts with arround
30-40.000 HAM messages per day. (do not ask about crappy SPAM)
Now my question is:
What is the best setup for spamfiltering? Exspecialy if the
number of customers increase to more then 100.000.
Should I setup some extra servers with spamassassin/clamav-ng
and use spamc/spamd of the network?
I have tried courier-pythonfilter on the <courier-proxy> with clamav-ng/
spamassassin and failed because I was not able to setup per user rules.
Any help welcome.
Note: We are currently seting up the WHOLE Datacenter with nearly
300 Servers wnere we wlil have over 100 <mbox-NNN>.
Thanks, Greetings and nice Day/Evening
Michelle Konzack
--
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