Was the Epistle to Yemen actually written by Maimonides? If part of it was, does this mean that the entire work was? Might a letter from Maimonides have had later commentary added in by a community that found itself victims of Zaydi oppression and forced conversions?
This video explores some anomalies in letter, which indicates possible later interpolation from the Yemenite community which passed this letter down. This is a particularly important matter for Jewish-Islamic relations, as this is the only source of the Rambam speaking negatively towards Islam and Muhammad, whereas works that he wrote and claimed promoted a different view altogether.