日志文件：

deliver(kevin.x.sun@oyesgo.com): Jan 27 10:42:56 Info: Quota rule: root= mailbox=* bytes=1073741824 messages=0
deliver(kevin.x.sun@oyesgo.com): Jan 27 10:42:56 Info: Quota warning: bytes=912680550 (85%) messages=0 command=/usr/bin/dovecot-quota-warning.sh 85
deliver(kevin.x.sun@oyesgo.com): Jan 27 10:42:56 Info: Quota warning: bytes=966367641 (90%) messages=0 command=/usr/bin/dovecot-quota-warning.sh 90
deliver(kevin.x.sun@oyesgo.com): Jan 27 10:42:56 Info: Quota warning: bytes=1020054732 (95%) messages=0 command=/usr/bin/dovecot-quota-warning.sh 95
deliver(kevin.x.sun@oyesgo.com): Jan 27 10:42:56 Info: maildir: data=//var/vmail/vmail01/oyesgo.com/kevin.x.sun//Maildir/:INDEX=//var/vmail/vmail01/oyesgo.com/kevin.x.sun//Maildir/
deliver(kevin.x.sun@oyesgo.com): Jan 27 10:42:56 Info: maildir++: root=//var/vmail/vmail01/oyesgo.com/kevin.x.sun//Maildir, index=, control=, inbox=//var/vmail/vmail01/oyesgo.com/kevin.x.sun//Maildir
deliver(kevin.x.sun@oyesgo.com): Jan 27 10:42:56 Info: cmusieve: /var/vmail/vmail01/oyesgo.com/kevin.x.sun//.dovecot.sieve doesn't exist
deliver(kevin.x.sun@oyesgo.com): Jan 27 10:42:56 Info: cmusieve: Using sieve path: /var/vmail/sieve/dovecot.sieve
deliver(kevin.x.sun@oyesgo.com): Jan 27 10:42:56 Info: cmusieve: Script not found: /var/vmail/sieve/dovecot.sieve
deliver(kevin.x.sun@oyesgo.com): Jan 27 10:42:56 Info: msgid=<201001271045432969276@126.com>: saved mail to INBOX

貌似是这句，找不到这个文件
deliver(kevin.x.sun@oyesgo.com): Jan 27 10:42:56 Info: cmusieve: /var/vmail/vmail01/oyesgo.com/kevin.x.sun//.dovecot.sieve doesn't exist

但sieve用的配置文件在/var/vmail/sieve/oyesgo.com/kevin.x.sun这里，该如何解决？
[root@mail kevin.x.sun]# ll
total 4
lrwxrwxrwx 1 vmail vmail  11 Jan 25 17:25 dovecot.sieve -> ./roundcube
-rw------- 1 vmail vmail 114 Jan 25 17:25 roundcube