Scalability of 'spam.whitelist.rules' facility

Quentin Campbell Q.G.Campbell at newcastle.ac.uk
Mon May 21 10:06:37 IST 2007


Our 'spam.whitelist.rules' file currently has over 4,000 entries and is
growing at the rate of about 200-300 entries each week.

At what point does the number of entries in the whitelist file become
'too many' and impact the performance of MailScanner?

If all of our users requested just one address each to be whitelisted
then 'spam.whitelist.rules' would have more than 20,000 entries!

[The increase in requests to whitelist is probably because the recently
enabled Bayesian filter in SpamAssassin has had a significant impact on
increasing the amount of tagged spam but at the cost of an increase in
false positives.]

Quentin 
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