this list of white artists who have had 'reggae (influenced) hits' on the list below speaks for itself.
(from,
http://www.findarticles.com/p/articles/mi_m2822/is_1_24/ai_73712453/pg_5)
YEAR ARTIST TITLE
1968 Johnny Nash Hold Me Tight
1972 Paul Simon Mother and Child Reunion
1972 Johnny Nash Stir It Up
1972 Johnny Nash I Can See Clearly Now
1972 Staple Singers I'll Take You There
1973 Paul McCartney/Wings Live & Let Die
1974 Paul McCartney/Wings Jet
1974 Eric Clapton I Shot the Sheriff
1974 Elton John Lucy in the Sky with Diamonds
1974 Stevie Wonder Boogie on Reggae Woman
1976 Eagles Hotel California
1978 10cc Dreadlock Holiday
1979 The Police Walking on the Moon
1980 Stevie Wonder Master Blaster Jammin'
1980 Blondie The Tide Is High
1983 The Police Wrapped around Your Finger
1983 UB40 Red Red Wine
1993 Ace of Base All That She Wants
1993 Ace of Base The Sign
1993 Snow Informer
1994 Big Mountain Baby I Love Your Way
the article also discusses 'authenticity':
"The mainstream Euro-American audience has continually demonstrated a propensity for adopting reggae-oriented material on the basis of its aesthetically pleasing surface qualities rather than for explicitly political or deeper musical content. Indeed, some research has suggested that this audience has in fact largely failed to comprehend what is actually being sung (Winer 36). Chart successes by reggae artists and pseudoreggae songs by white pop artists have utilized fragmented elements of the music's syntax while simultaneously divorcing it from the political polemics of Rastafari, and reggae culture in general. Paradoxically, then, the very popularity of reggae, which has led to its global adoption among various artists and audiences, has contributed significantly to its ideological delusion and creative dilution."