[Mail] qmail突然收不到信？？？

[weixin_38053515]

我的qmail服务器，今天突然收不到信了，以前还好好的，今天打开一看不能收信了！这是为何？
日志如下：Dec 16 10:56:46 wxm001 qmail: 1071543406.311860 warning: unable to stat mess/14/14
Dec 16 10:56:46 wxm001 qmail: 1071543406.315756 warning: unable to stat mess/15/15
Dec 16 10:56:46 wxm001 qmail: 1071543406.330595 warning: unable to stat mess/16/16
Dec 16 10:56:46 wxm001 qmail: 1071543406.342862 warning: unable to stat mess/17/17
Dec 16 10:56:46 wxm001 qmail: 1071543406.364830 warning: unable to stat mess/18/18
Dec 16 10:56:46 wxm001 qmail: 1071543406.389120 warning: unable to stat mess/19/19
Dec 16 10:56:46 wxm001 qmail: 1071543406.399239 warning: unable to stat mess/2/2
Dec 16 10:56:46 wxm001 qmail: 1071543406.400607 warning: unable to stat mess/20/20
Dec 16 10:56:46 wxm001 qmail: 1071543406.401629 warning: unable to stat mess/21/21
Dec 16 10:56:46 wxm001 qmail: 1071543406.417205 warning: unable to stat mess/22/22
Dec 16 10:56:46 wxm001 qmail: 1071543406.446736 warning: unable to stat mess/3/3
Dec 16 10:56:46 wxm001 qmail: 1071543406.468415 warning: unable to stat mess/4/4
Dec 16 10:56:46 wxm001 qmail: 1071543406.472268 warning: unable to stat mess/5/5
Dec 16 10:56:46 wxm001 qmail: 1071543406.491384 warning: unable to stat mess/6/6
Dec 16 10:56:46 wxm001 qmail: 1071543406.504796 warning: unable to stat mess/7/7
Dec 16 10:56:46 wxm001 qmail: 1071543406.505900 delivery 30044: success: did_0+1+0/qp_27724/
Dec 16 10:56:46 wxm001 qmail: 1071543406.515687 status: local 2/10 remote 0/20
Dec 16 10:56:46 wxm001 qmail: 1071543406.528725 delivery 30045: success: did_0+1+0/qp_27729/
Dec 16 10:56:46 wxm001 qmail: 1071543406.529813 status: local 1/10 remote 0/20
Dec 16 10:56:46 wxm001 qmail: 1071543406.539932 warning: unable to stat mess/8/8