>I'm using the WWIPSTUFF class from West Wind. I've used this successfully to send email with atttachments, but I am now using a different application that is generating an error: "550 5.7.1 you are not allowed to use this address". Any ideas on what might be causing this or where I can research this error message?
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>Thanks.

Try to post question at http://www.west-wind.com/wwthreads/