This message contains a digital signature, but a technical error was detected. Either the message has been corrupted, or the message has been modified by someone else.
Mae'r neges hon yn cynnwys llofnod digidol, ond canfuwyd gwall technegol. Naill ai mae'r neges wedi'i llygru, neu mae'r neges wedi'i haddasu gan rywun arall.