The migration failed checking Source credentials. The handshake failed due to an unexpected packet format.
Answer:
This error indicates that MigrationWiz is attempting to log in to an IMAP server using SSL while the server is only supporting non-SSL connection. Usually, this means that port 143 was specified, and the Use a secure connection (SSL) option was enabled.
Resolution:
Either
- Update the project to connect on the IMAP server on its SSL enable port (usually 993).
OR
- Uncheck Use a secure connection (SSL).