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Antispam Real Time Black Lists

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Hello.

Could you tell me 3 of the best free Antispam Real Time Black Lists that I could use in order to prevent spam messages from reaching my email server?

Thank you in advance.

Stergios

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by bob_steel

This depends on now agressive you want to be.

I maintain three clusters, each with a different level of spam tolerance.

Maybe start off with:

bl.spamcop.net
sbl.spamhaus.org
dnsbl.njabl.org

This gives you two verified spam lists and some protection from open relay and naff proxies.

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