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Oracle Tips by Burleson 

Web Stalkers
Chapter 13 - Spam, Spam, Spam, Spam

Using Spam Services

Using the “no e-mail from strangers” filtering policy may sound good, especially if one is currently getting flooded by spam, but the risk of losing something important is high.  Unless an e-mail address is specifically placed on the list of acceptable e-mail senders, it will be rejected.  There are no exceptions to the rule with this method.  While effective, it is clear there are many situations in which a legitimate e-mail message may be sent from an unfamiliar address.  Unfortunately, the message will be routed to the spam folder.  Overly aggressive tactics in dealing with spam can have negative consequences.

Other services offer less drastic filters and are compatible with many popular Internet e-mail sites including MailBlocks (, Spam Arrest ( and various others.  When an e-mail is received from a sender not specified on the list of authorized addresses, an automatic reply is generated by the system, directing the sender to a special web page.

When the unauthorized sender links to the page, they will be required to enter data in response to queries provided at the website.  When the sender successfully completes this task, their e-mail transaction will become authorized and their message will be placed in the Inbox.  This requirement prevents bulk spam programs from successfully sending e-mail to the users of this type of service. 

One of the downsides to this type of service is that it requires extra work on the part of the sender the first time they send an e-mail message.  If this additional work causes the sender to decide the message is not worth the extra effort, the e-mail message will not be delivered.

The above text is an excerpt from:

Web Stalkers
Protect yourself from Internet Criminals & Psychopaths
ISBN 0-97-45993-9-5

by Donald K. Burleson, Stephen Andert

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