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503 valid RCPT command must precede DATA
If you get this error when sending email:
The server responded: 503 valid RCPT command must precede DATA
it means that you are not authenticating with the server, prior to sending your message.

You need to configure your email client to authenticate automatically by checking the "my server requires authentication" box in your email configuration.
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Additional Information
Article ID: 6
Author: Internet Intuitive Support Desk
Created On: 21 Nov 2005
Views: 13107

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