Anti-Virus for Sun Messeging server

Dear All
I have installed the sun messaging platform with no serious problem and everything looks okay, but really I don't have any idea how to integrate it with Anti-Virus software, the sun document is not complete and also 3rd parties document is not clear, I am looking to integrate it with Clamav which is free.
BR
Mo

Description      Top
This article describes a month-long process that yielded a working, complete Sun Java[TM] System Messaging Server installation, including SpamAssassin and Clam-AV. Installation described includes Solaris[TM] 9 X86 and Redhat Linux AS 2.1u2 tests.
Document Body      Top
A Small Mail Server, step-by-step
Goal: Build a fully functional Sun Java System Messaging Server (Sun JES2), on X86 platform, with SpamAssassin and Clam-AV, all on a single system.
Goal for this document: To note all major steps, and show pitfalls overcome.
1.
Hardware chosen: Standard PC, using an AMD 1700+ processor, ATI video board, Linksys 10/100 ethernet card. This system happened to be in my parts bin, all as separate parts. Motherboard chosen, MSI KM2M, with both video and network cards disabled.
2.
Operating system: Both Solaris 9 X86 and Linux AS 2.1 u2 are supported for the Messaging Server chosen, and both were evaluated.
1.
Linux installer seems more able to recognize the above hardware, and install the correct drivers. In fact, the Linux installer was happy with the built-in networking, but not able to use the built-in video capability. When the system was installed and tested, approximately 25% of the messages sent from Messaging Server to SpamAssassin resulted in tcp errors, causing spam to be delivered to mailboxes. Troubleshooting this problem appeared to be more difficult than changing OS.
2.
Solaris 9 X86 was able to configure itself for the video card, without error, but was not able to recognize the network card. A driver for this network card was found via links given in the Sun website for �reported to work� network cards. I found no documentation for exactly how to make the OS aware of the network card, so after some trial and error, here is that solution:
1.
Install the OS, without networking.
2.
Install the network card driver, per the documentation that comes with it, and test with the included software.
3.
Issue the �sys-unconfig� command to the OS. When the system reboots, configure all network settings.
1.
Installation of Sun JES2 is done normally, and proceeds without problems.
2.
The version of Perl that is included with Solaris[TM] was compiled with the Sun Forte[TM] compiler, and so does not know about other compilers. When you attempt to use CPAN or a makefile.PL to compile additional software, such as SpamAssassin or any of the optional sofware needed for that, you get errors. If you do not wish to purchase a Sun/Forte compiler, you can install gcc from the Sun Free Software site, and download/compile a new Perl version with that. This is what I did.
3.
Follow SpamAssassin documentation to install SpamAssassin. Follow Sun documentation for integration into JES Messaging Server. Test.
4.
Download, compile and install Clam-AV virus scanner. I put the �freshclam -quiet� command into the configutil setting for Messaging Server, as local.schedule.freshclam. This updaes the AV database. I used every 30 minutes as an interval.
5.
Integration of the Clam-AV is open for discussion. There are two different ways to do the integration. One way is through the documented �conversion channel�. This is certainly a good way, but has some drawbacks. Conversion Channel integration requires that a new process be started for each message, causing some overhead, and limiting performance. Another way is to use a third-party product, such as Amavis to communicate between SMTP and Clam-AV. I chose this second route for this installation. Install Amavis-new per documentation provided with it. We're using the amavisd daemonized version in our example. /etc/amavis.conf contains the settings for amavisd. I used port 10024 to send messages to amavisd, and 10025 to send the scanned results back to Messaging Server. I turned off amavis' ability to also call SpamAssassin, so I would not be scanning messages twice. I configured Messaging Server's inbound channels with the �aliasdetourhost� keyword, pointing to a new channel I created to handle Amavisd.
My imta.cnf now has these new lines:
! tcp_scan
[] $E$R${tcp_scan,$L}$U%[$L]@tcp_scan-daemon
and in section II:
! tcp_local
tcp_local smtp mx single_sys subdirs 20 dequeue_removeroute maxjobs 7 pool SMTP_POOL maytlsserver allowswitchchannel saslswitchchannel tcp_auth missingrecipientpolicy 4 aliasdetourhost tcp_scan-daemon
tcp_local-daemon
! tcp_scan
tcp_scan smtp single_sys subdirs 5 notices 1 backoff "pt8h" "pt24h" dequeue_removeroute maxjobs 7 pool SMTP_POOL daemon [127.0.0.1] port 10024
tcp_scan-daemon
Dispatcher.cnf adds:
[SERVICE=SMTP-SCAN]
DEBUG=-1
PARAMETER=CHANNEL=tcp_scan
PORT=10025
IMAGE=IMTA_BIN:tcp_smtp_server
LOGFILE=IMTA_LOG:tcp_scan-server.log
STACKSIZE=2048000
Option.dat (this is just the spamassassin stuff):
spamfilter_config_file=/opt/SUNWmsgsr/config/spamassassin.opt spamfilter_library=/opt/SUNWmsgsr/lib/libspamass.so spamfilter_string_action=data:,require "fileinto"; fileinto "$U"
Message flow, is now:
1.
Message received by MTA
2.
Forward a copy to SpamAssassin
3.
Receive a binary �spam/not-spam� answer.
4.
Forward message to Amavis, for virus scanning. (through tcp_scan channel).
5.
Receive message back from Amavis, through tcp_scan channel, for delivery to mailbox.
6.
Deliver message to mailbox.
This setup has been working, without error for about 5 days, so far. I've received several thousand messages, identified and removed about a dozen virus-laden messages, and over 800 spam messages. My intention is to move to production by next week. As far as I can tell, the only downside to this configuration is that the mail.log_current shows two enqueue lines and two dequeue lines for each message. We get to see the initial enqueue, the dequeue to tcp_scan, an enqueue from tcp_scan to ims-ms, and the final dequeue. This could be configured differently.

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