Troubleshoot and resolve Required function is not available errors.
Troubleshoot and resolve Resellers are not permitted to create subdomains of the server's main domain errors.
Manually try a domain-related module action again after resolving an error or other failure that appears in the Module Queue.
Troubleshoot and resolve Segmentation fault errors.
Troubleshoot and resolve Sending Failed errors.
Troubleshoot and resolve Sender Verify Failed errors.
Troubleshoot and resolve Email Send Aborted By Hook errors.