In this video, Michael, Erick and Craig have a round table discussion on the rebaptism controversy in modern Eastern Orthodoxy. Visit www.reasonandtheology.com for more information.
Rebaptism in Eastern Orthodoxy (Round Table Discussion on Reason and Theology)

In Orthodoxy, there is only one baptism. If a baptism was performed in an Orthodox manner, in the name of the Father and of the Son and of the Holy Spirit, by trine immersion in water, immersion into water, 3 dips into the water of catechumen baptismal recipient, even if administered by a schismatic or a heretic, the baptism is valid once the candidate has received chrismation, the sacrament of chrismation, by the hand of the Orthodox Church, Chalcedonian, to make up for whatever was lacking in the minister who was in some way heterodox in his/their traditions, as in the case of the Armenians, Copts, Syrians, Ethiopians, Indians, who are in schism by non-reception of Chalcedon. If the baptismal candidate is received by confession of the Orthodox Faith, N-C Creed of 381 AD unaltered and without Filioque or any additions or omissions, the procedure is valid. There is no rebaptism in the EOC. One is either properly baptized, or not, or if it is not known whether one has been baptized or not, one must be received by Orthodox baptism. There is no rebaptism no more than 1 baptism for the remission of sins.
TY for the elaboration, yes, this is the view of St Dionysus of Alexandria.