2 Q' V$ Q; b2 M7 AThis request could not be forwarded to the origin server or to any parent caches. ! N$ J5 _. k5 r r* ^6 A' E; v$ P( W# n
可能的问题包括:; ]" I% J! Y/ x: d
( ^+ u7 K# W/ f6 p8 u: WAn Internet connection needed to access this domains origin servers may be down. & L c9 H! V& K& J$ \+ fAll configured parent caches may be currently unreachable. 8 S6 }6 \/ |9 l+ y3 f+ @% g3 L& xThe administrator may not allow this cache to make direct connections to origin servers.3 s$ h+ G! |' K2 K1 e- E# K
缓存服务器的管理员 [email protected].