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What to do when you are using the Nebula Synchronizer and aren't able to continue past step 2 due to the following error:
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This error message is shown if something is the matter with the SSL certificate of your email domain/email server. It might probably have been expired or a self-signed certificate is being used, which is not supported when using the Nebula Synchronizer.
Contact your local IT party/system administrator to solve this issue.