Generally, those that say they're made in the Dominican Republic are legit. And, IMO, they're usually better than the legit or non-legit Cubans.
Cubans, once again IMO, are over-rated. There are good cigars from several countries and the perception that Cubans are the "best" is false. I had a couple of enjoyable Costa Ricans while in San Pedro.
I was just in Cozumel and the lying cigar-sellers there have multiple ways to "prove" that their Cubans are real, including counterfeit box seals. Some of the non-Cuban Cubans aren't that bad.