Delegating a charity organization to pay kafaarat yameen (expiation for breaking a vow)

I have a question regarding the kaffaarah mentioned in the eighty ninth ayah of sooratul Maa'idah, that the deliberate violation of an oath should be expiated by feeding ten poor persons the average of what you feed your own family, clothe them, free a slave or fast if none of these is possible.  Would sending money through a relief group (Muslims serving Muslims) fulfill feeding the ten poor persons according to the standard that one feeds his own family?  This is assuming that no money was extracted for administrative charges,there is money enough to feed the appropriate number of people, and that the people involved in the distribution of the food are of sound repute.  If this is not acceptable what person would be acceptable as a "poor person"?