[
{sasl, [
    {sasl_error_logger, {file, "sasl.log"}},
    {errlog_type, all},
    {error_logger_mf_dir, "."}, % Log directory
    {error_logger_mf_maxbytes, 10485760}, % 10 MB max file size
    {error_logger_mf_maxfiles, 5} % 5 files max
]}
].