收不到服务器绑定域名以后的域名发来的邮件，像gmail  yahoo等
maillog提示很多这样的：
Jun  9 16:01:01 mail policyd-cleanup: clean up process starting: policyd v1.82
Jun  9 16:01:01 mail policyd-cleanup: connecting to mysql database: 127.0.0.1
Jun  9 16:01:01 mail policyd-cleanup: clean up process starting: policyd v1.82
Jun  9 16:01:01 mail policyd-cleanup: connecting to mysql database: 127.0.0.1
Jun  9 16:01:01 mail policyd-cleanup: connected..
Jun  9 16:01:01 mail policyd-cleanup: expiring throttlesender records older than 31 days (1273435261)
Jun  9 16:01:01 mail policyd-cleanup: expired: 0 records
Jun  9 16:01:01 mail policyd-cleanup: expiring throttlesender instances older than 1 hour (1276110061)
Jun  9 16:01:01 mail policyd-cleanup: expired: 0 records
Jun  9 16:01:01 mail policyd-cleanup: connected..
Jun  9 16:01:01 mail policyd-cleanup: expiring validated records older than 7 days (1275508861)
Jun  9 16:01:01 mail policyd-cleanup: expired: 0 records
Jun  9 16:01:01 mail policyd-cleanup: expiring unvalidated records older than 2 days (1275940861)
Jun  9 16:01:01 mail policyd-cleanup: expired: 0 records
Jun  9 16:01:01 mail policyd-cleanup: expiring blacklisted records (1276113661)
Jun  9 16:01:01 mail policyd-cleanup: expired: 0 records
Jun  9 16:01:01 mail policyd-cleanup: expiring autowhitelisted records older than 7 days (1276113661)
Jun  9 16:01:01 mail policyd-cleanup: expired: 0 records
Jun  9 16:01:01 mail policyd-cleanup: expiring helo records older than 7 days (1276113661)
Jun  9 16:01:01 mail policyd-cleanup: expired: 0 records
Jun  9 16:01:01 mail policyd-cleanup: expiring throttlerecipient records older than 31 days (1273435261)
Jun  9 16:01:01 mail policyd-cleanup: expired: 0 records
Jun  9 18:01:01 mail policyd-cleanup: clean up process starting: policyd v1.82
Jun  9 18:01:01 mail policyd-cleanup: connecting to mysql database: 127.0.0.1
Jun  9 18:01:01 mail policyd-cleanup: clean up process starting: policyd v1.82
Jun  9 18:01:01 mail policyd-cleanup: connecting to mysql database: 127.0.0.1
Jun  9 18:01:01 mail policyd-cleanup: connected..
Jun  9 18:01:01 mail policyd-cleanup: expiring validated records older than 7 days (1275516061)
Jun  9 18:01:01 mail policyd-cleanup: expired: 0 records
Jun  9 18:01:01 mail policyd-cleanup: expiring unvalidated records older than 2 days (1275948061)
Jun  9 18:01:01 mail policyd-cleanup: expired: 0 records
Jun  9 18:01:01 mail policyd-cleanup: expiring blacklisted records (1276120861)
Jun  9 18:01:01 mail policyd-cleanup: connected..
Jun  9 18:01:01 mail policyd-cleanup: expiring throttlesender records older than 31 days (1273442461)
Jun  9 18:01:01 mail policyd-cleanup: expired: 0 records
Jun  9 18:01:01 mail policyd-cleanup: expired: 0 records
Jun  9 18:01:01 mail policyd-cleanup: expiring throttlesender instances older than 1 hour (1276117261)
Jun  9 18:01:01 mail policyd-cleanup: expiring autowhitelisted records older than 7 days (1276120861)
是不是提示policyd过期？

外域发过去的邮件全部退信

服务器开放的端口有：
icmp type 8
5    ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           multiport dports 5222,5223,5280
6    ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           multiport dports 80,443
7    ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           multiport dports 25,465
8    ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           multiport dports 110,995
9    ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           multiport dports 143,993
10   ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           multiport dports 389,636
11   ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           multiport dports 21,20
12   ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           tcp dpt:22