553 Mail from 61.185.81.172 not allowed - VS99-IP1 deferred - see help.yahoo.com/help/us/mail/defer/defer-02.html see help.yahoo.com/help/us/mail/defer/defer-02.html (针对退信为 553 not allowed - VS99-IP1 deferred的错误) 网页概要: 1、Open proxies and open relays 开放代理以及启用匿...