From the World Conference of the Noahide Nations

Judge Rabbi Sander Goldberg, utilizing the Talmud, Rambam, Ramban and other primary sources, clearly demonstrates why Jesus, Shabbetai Zvi and any others were not the Mashiach.  Judge Goldberg teaches on when the first redemption could have happened as well as Israel's receiving the Torah.  He further discusses why it is problematic to calculate the exact time when the Mashiach will be anointed and why some sages did it anyway.  There are to many teachings to list here but rest assured you will want to watch this one over and over again.  There is an excellent Q&A session following the teaching.