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OKay, I've read, and been told from Tech support that the spamassassin that comes with SmaterMail is single threaded.. However.. I've successfully gotten it to run in multithread mode by running it from the command line with the following command line.

spamd -m 50 --min-spare=25 --allow-tell --syslog=spamdLog.txt --port=784

I run it on port 784 so that the one that SmarterMail invokes will not conflict.. I can also see the logfile information.  My question is, why doesn't SmarterMail do this out of the box?  Why doesn't SmarterMail allow us to tweak these command line settings?.. and more importantly WHY do they tell us that it isn't not multithreaded when it is?

Thanks, Connor

The included Windows port of SpamAssassin 3.1.7 does indeed have multithreaded switches. However, it does not actually process in parallel. This was fixed in an update in version 3.2.x of SpamAssassin. However, each thread adds nearly 70 mb of memory usage and the service crashes when it receives heavy usage. We included 3.2.x of SpamAssassin some versions of SmarterMail 4.3, but we reverted back due to user demand. 

All in all, we chose stability and low impact for out of the box just check an option and it will work functionality.  Admins who are more technically savvy (you, for example) can choose to run a seperate install of SpamAssassin if you need more processing power.