For my sins, I watch the SMTP logs on a relatively low-activity machine.Recently a number of machines started trying to send it email with theenvelope sender of support@PayPal.Inc.com , which to a human is aboutas clear a sign of phish spam as you could ask for (although computersare not that smart).

As it happens, all of the email (from all of those hosts) was rejected.Not because the mail system detected it as spam, but because there is