Eu verificaria erros e enviasse algo / correspondesse - mas você também pode forçar o backup a continuar, independentemente de erros:
da página de referência do mysqldump :
--force, -f
Continue even if an SQL error occurs during a table dump.
One use for this option is to cause mysqldump to continue executing even when it encounters a view that has become invalid because the definition refers to a table that has been dropped. Without --force, mysqldump exits with an error message. With --force, mysqldump prints the error message, but it also writes an SQL comment containing the view definition to the dump output and continues executing.