> I need to install a new Antispam software on a different box of > IMail, so I ask you a valid AntiSpam (ASSP, SpamAssassin, ....) to > manage more than 50,000 emails per day.
You're actually mixing apples and oranges already: ASSP is implemented as an SMTP proxy (thus the name), while SpamAssassin is is a scanning process or daemon that hooks into a separate MTA or proxy. It's also not really precise to speak of SA in general, when its performance under load depends on the number of plug-ins you have activated; for example, with and without OCR features, SA is a different beast. And SA with the free Razor and DCC content databases is much more powerful than SA as a rules engine only. In any case, on any modern hardware, anti-abuse software with that has a lot of scanning overhead and a low max simultaneous connections should be able to handle your load. The variables for you are functionality and price, and both depend what OS you can afford to support. (And "support" means through good times and bad.) Postfix is free software that runs on a free OS and has a tremendous amount of built-in conenction-time anti-abuse functionality; installation and support will cost you if you are not familiar with the OS -- though if you have non-modern hardware you can save considerably in that vector, as the MTA is extremely lightweight. It can also hook into SA, giving much more granularity but making the server load naturally heavier. ASSP is free software that can run on Windows; if that's your comfort zone (and it should be if you're supporting IMail), then you can try it out again, providing dedicated hardware and OS to it this time. ORF is an inexpensive Windows application that runs within the free Windows IIS SMTP server and that can hook a free Windows-based SpamAssassin daemon or process on the same box, as well as hooking into for-cost content databases such as Message Sniffer. I use this setup frequently in Windows shops and find it extremely powerful. Declude Junkmail is a lowish-cost ($400-$2300/yr depending on # of domains) Windows app that can run within the free SmarterMail SMTP server. Declude bundles the popular CommTouch OEM content database. Declude can also call free SpamAssassin, or hook into for-cost databases, so it is a very open book... similar to the error of referring to SpamAssassin itself as one monolithic level of protection, one Declude server can have vastly different capabilities from another. Alligate is lowish-cost ($800+$300/yr or other subscription options) standalone Windows SMTP gateway with very powerful proprietary features. Its authors publish a well-respected content database which can be hooked into the product, so it you're getting two different vectors of protection as with DJM. Other choices abound. You should understand by now the levels of flexibility that go into building a "single" anti-abuse box! You really have to get your requirements straight -- or download a bunch of demos, try 'em out, and gather your requirements from observed features. --Sandy ------------------------------------ Sanford Whiteman, Chief Technologist Broadleaf Systems, a division of Cypress Integrated Systems, Inc. e-mail: [EMAIL PROTECTED] SpamAssassin plugs into Declude! http://www.imprimia.com/products/software/freeutils/SPAMC32/download/release/ Defuse Dictionary Attacks: Turn Exchange or IMail mailboxes into IMail Aliases! http://www.imprimia.com/products/software/freeutils/exchange2aliases/download/release/ http://www.imprimia.com/products/software/freeutils/ldap2aliases/download/release/ To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
