In email sent by scheduler, attachment long file name with non-english characters encodes like =UTF-8B0LTRi9C70LLQvtCw0LQtNC70YTRi9C+INC00Ls== =UTF-8B0YfQviDQstC70LQg0L7RgtGL0LTQstCw0LvQviA== =UTF-8B0YvQtNGC0LvQsNC80L4g0YvQtNC70LDQvtC40YLQvw=== =UTF-8B0LvQtNGL0L7QuNGCINCy0LDQv9C8Lnhsc3g==
if filename is short attachment is Ok.