关于QMAIL和VPOPMAIL的问题，在线等候。。。。

Question

MAIL系统已经装好：我的部门网段是10.12.22.0/25
几个文件的内容如下：
/var/qmail/control/rcpthosts:
omms.cnc
bjch.com.cn(内部网的另一个部门，网段是10.13.20.0/25，我们是通过一个路由器和这个部门连接的，网络肯定是通的。)
sina.com.cn
sina.com

/var/qmail/control/helohost:
mail.omms.cnc

/var/qmail/control/locals:
mail.omms.cnc

/var/qmail/control/defaultdomain:
omms.cnc

/var/qmail/control/defaultdelivery:
./Maildir/

/var/vpopmail/etc/tcp.smtp
127.0.0.1:allow,RELAYCLIENT=""
:allow

当我向新浪发邮件时，log文件显示：
@4000000041e65b8228ed786c new msg 228722
@4000000041e65b8228ed8fdc info msg 228722: bytes 1521 from <mahua@mahua.dns>; qp 13617 uid 1002
@4000000041e65b82292afe6c starting delivery 15: msg 228722 to remote nir123ma@sina.com
@4000000041e65b82292b15dc status: local 0/10 remote 1/20
@4000000041e65b8315d5aefc delivery 15: deferral: Connected_to_202.106.182.230_but_connection_died._(#4.4.2)/
@4000000041e65b8315d5ce3c status: local 0/10 remote 0/20

向bjch.com.cn(内部网的另一个部门，也是我们部门的出口)发邮件时，log文件显示：
@4000000041e65c551741a6c4 new msg 228725
@4000000041e65c551741be34 info msg 228725: bytes 1517 from <mahua@mahua.dns>; qp 13838 uid 1002
@4000000041e65c551784aeec starting delivery 16: msg 228725 to remote mahua@bjch.com.cn
@4000000041e65c551784ce2c status: local 0/10 remote 1/20
@4000000041e65c6f27f76454 delivery 16: deferral: Sorry,_I_wasn't_able_to_establish_an_SMTP_connection._(#4.4.1)/
@4000000041e65c6f27f78394 status: local 0/10 remote 0/20

总之是都发送失败，但我再本部门的网内可以正常收发，那位成功qmail系统的朋友给我指点一下，我还应该做写什么才能正常发送。谢谢！

Answer 1

更正两个错误：
<mahua@mahua.dns>;：
@4000000041e65b8228ed8fdc info msg 228722: bytes 1521 from <mahua@omms.cnc>; qp 13617 uid 1002

<mahua@mahua.dns>;：
@4000000041e65c551741be34 info msg 228725: bytes 1517 from <mahua@omms.cnc>; qp 13838 uid 1002