0 m& N: s# m- \6 C& z. x9 zThis request could not be forwarded to the origin server or to any parent caches.4 `9 x( E0 p6 {' S- u2 g! H9 u
8 ?& e0 v! |# M) f可能的问题包括: 5 ~: E2 G) h, H+ x, u2 X' [" T0 l! R6 c0 l3 {' N
An Internet connection needed to access this domains origin servers may be down. . i. s3 e* B$ q5 q, V0 r; t! s$ eAll configured parent caches may be currently unreachable. ) F$ K0 Q$ V% D- f2 C) p4 xThe administrator may not allow this cache to make direct connections to origin servers. , N; F2 @, I: M缓存服务器的管理员 [email protected].