OLEXP: Loop-Causing Rule Not Applied and No Error Message Displayed

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Rules that forward messages to your own e-mail account can cause a loop to occur. For example, the following rule causes a loop to occur: If you receive a message that contains "Test" on the Subject line and the rule is actually applied to the message, the message is forwarded to your e-mail address. Because the forwarded message contains "Test" on the Subject line, the rule is applied again, another message is forwarded to your e-mail address, and the loop continues.

To prevent the loop from occurring, Outlook Express does not actually apply the rule to the original message when it arrives in your Inbox.