We now have what I think is the fastest spam bot detection on the planet. Our blacklist are now listing over a million spam bots that have tried to spam us in the last 4 days. We only keep 4 days of data because if we get something wrong or someone fixes their virus problem [...]

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Made an interesting observation on Friday that spam bots don’t do a QUIT at the end of an SMTP session. Real email servers are polite and after the message is sent they send a QUIT commant to tell the receiving server to close the connection. Spam bots however don’t send the quit command because the [...]

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