I was wondering if anyone else has seen this error when sending an email in VB.Net using the SMTP service. I have verified that the to and from email address are correct. What else could be causing this.


Server Error in 'xxxxxx' Application.
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The server rejected one or more recipient addresses. The server response was: 550 client.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Runtime.InteropServices.COMException: The server rejected one or more recipient addresses. The server response was: 550 client.