Linux running Postfix MTA + SpamAssassin + ClamAV is our first layer of defense. It has been the ticket for us. You can pick just about any flavor of linux you want. We use Fedora because it is fast to set up, and relatively easy to find things. There are several good "recipies" for setting up Postfix with SpamAssassin. I think it took me about a 2-3 days to get my first one going. I did not really know much about Linux or Unix MTA's. Fedora comes with Postfix right on the CD, and you can use that, but I would highly recommend not using the one on the CD. Get the latest RPM from http://postfix.wl0.org/en/ Grab SpamAssassin from www.spamassassin.org You can grab linux ISOs that you can burn to cd from www.linuxiso.org I used information from http://www.advosys.ca/papers/ to set up postfix. We have about 280 mailboxes. I run SpamAssassin on a 1.2Ghz box with 1GB of RAM. We are currently rejecting over 18,000 emails per day with Postfix header checks, a couple of RBL's (Always use RBL's with extreme caution) and some other goodies that Postfix provides. And of course... It was "free". The software was free. The server it runs on is actually an older Dell Optiplex desktop that has run 24/7 for almost 2 year that was not being used (free). My time was not free. But I did learn a lot about linux and how mail systems work. We have an extremely reliable and accurate weapon against spam. And I know how it works, and I have complete control over every aspect of the spam checking process. Best of luck with whatever you choose. Ray -----Original Message----- From: Sanjay Choudhary [mailto:SChoudhary@xxxxxxxxxxxxxxxxx] Sent: Tuesday, May 24, 2005 9:30 PM To: [ExchangeList] Subject: [exchangelist] Spam Problem Importance: High http://www.MSExchange.org/ Hi All, We have exchange 2003 on windows 2003 server with 150 mailboxes .We are facing spam problem from both inside and outside and looking for Anti-spam software for our Exchange.We don't want take Antispam software for all mailboxes because of high cost.Can anyone suggest me a software which can protect spam for all mailboxes but uses only one user license. Thanks in Advance. Waiting for sincere advice. Regards, Sanjay Choudhary Disclaimer: ------------------------------------------------------------------------ ------------------------------------------- Information contained and transmitted by this e-mail is confidential, proprietary, and legally privileged data of Integrix India Private limited that is intended for use only by the addressee. If you are not the intended recipient, you are notified that any dissemination, distribution, or copying of this e-mail is strictly prohibited. You are requested to delete this e-mail immediately and notify the originator. Any views expressed by an individual do not necessarily reflect the view of Integrix India. While this e-mail has been checked for all known viruses, the addressee should also scan for viruses. Internet communications cannot be guaranteed to be timely, secure, error or virus-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete.Intergix India Private Limited does not accept liability for any errors or omissions. To know more about Integrix India Private Limited please visit http://www.integrixindia.com ------------------------------------------------------------------------ ------------------------------------------- ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: World of Windows Networking: http://www.windowsnetworking.com Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSEXchange.org Discussion List as: Ray.Dzek@xxxxxxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to listadmin@xxxxxxxxxxxxxx