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451 error while writing spool file

This message indicates that your email is not configured properly.

Please double check you are using the correct outgoing SMTP settings.

When sending email, you receive an immediate bounce such as the following:Subject: RE: XXXXXX -...

From your BlackBerry home screen, select the BlackBerry Set-up icon, then choose Personal Email...

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If you are trying to send emails and get a message like: 421, response: Unexpected failure,...

If you have a Linux dedicated server, you can fix this problem.In root WHM, go to Email >...