I will try to reinstall ASSP on a different box and I hope it will solve all
my spamming problems.
Thank you to all for your replies.
Mauro
----- Original Message -----
From: "Sanford Whiteman" <[EMAIL PROTECTED]>
To: "Mauro Lanci" <[email protected]>
Sent: Wednesday, April 18, 2007 10:58 PM
Subject: Re: [IMail Forum] Install an Antispam on a separate box
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/
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/
