You absolutely know a priest is orthodox when he doesn't allow women in the sanctuary, and only has Altar Boys.
You can tell when a priest is orthodox when the the hippies in the pews are angry because he doesn't add "Brothers and Sisters" to the bible verses that only say "Brethren".
You can tell a priest is orthodox when the closest hymn to "contemporary hymns" he's allowed is For All the Saints.
You know a priest is orthox when he is reverent in all things he does.
Being a priest is God's gift. It's a calling....