I told him it wasn't Bukowski and suggested he might want to withdraw the auction, but apparently others have done more than suggest...
"It is [genuine], but to avoid the uproar and HATE mail, I am receiving, it is now been sent to a California University Professor to provide more cred to it."
I guess the "California University Professor" will settle it once and for all.
For what it's worth, I think he believes it's real, he just hasn't seen enough (or any) real Bukowski writing.