From: Mike N. 

Much like stupid Outlook treats "Unknown recipient".   The
message will just
sit in the
outbox until the user notices it and removes it.  In the meantime it will retry the
message thousands of times per day.   I wonder if it thinks that by trying
often enough
that the unknown account will magically appear?

On Sat, 25 Oct 2003 20:55:18 -0400, "Geo."  wrote:

> The spammer servers seem to treat
>everything like a 4xx error, retry retry retry..

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