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Raymond Lillard wrote: |
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> My first thought is that your first line of defense should be |
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> a bank of smtp servers that know nothing of your internal users. |
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> The first line of defense should be focused on virus detection, |
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> adherence to SMTP protocols and RFCs, greet-pause, listing |
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> (black, white and grey) and my personal favorite, the tar-pit. |
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The problem is that some of the mail you pass to the internal server |
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will bounce. The majority of the bounces are spam or other nonsense that |
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has managed to make it past your filters somehow. These bounces tend to |
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sit on the smtp servers taking up space in the queue till they expire. I |
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find it more efficient to bounce the emails up front rather than have |
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them travel through the system twice. YMMV. |
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|
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I'd recommend against any sort of blacklisting. This hits it spot on. |
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http://www.acme.com/mail_filtering/shame_frameset.html |
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kashani |
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-- |
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gentoo-user@g.o mailing list |
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