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Mail Spam:
SMTP Economics
- Receiving e-mail is more resource intensive than sending it, due to the potentially high number of recipients and to the storage requirements.
- Traditional SMTP server software always forwards to non-local addresses, even for mesages which came from outside the local network; this is called third-party relay.
- Modern SMTP servers will only forward mail to non-local addresses if the mail message came from inside the local network.
- If you don't run a modern SMTP server, you will have to upgrade.
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Last Modified 9/20/98
