>From various place I can't resolve the name; from others it works fine
eg
on my FIOS line (96.234.66.*): fail
from Panix internet (166.84.67.*): success
(166.84.5.*): success
from bt.net (194.72.6.*): fail
from he.net (65.19.175.*): fail
from AShosting.nl (81.171.86.*): success
--
rgds
Stephen