Toolkit

Story: Using a five-layer filter to cut spam

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I don't see how that is five layers of filtering. Maybe a one layer system with the filtering spread out over five tiers. You might call it a five tiered system with 1 layer of spam protection. I don't see how any of your tiers are overlapping.

Anyway, JavaScript doesn't require any special firewall rules to use it to mask your email addresses. Although it's probably too late now, you're already on every spammer's mailing lists.

I would highly recommend hring a consultant or looking to see what is available before whipping up your own "spam solution". There are other ones out there for less admin work and less cost than what you have implemented that block more spam and with rare false positives.

An interesting read though, to see how the average joe is being forced to deal with their organization's spam problem without any guidance.

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