Postfix 问题请教高手

我的的Fedora 10.0 装了postfix 邮件系统使用fedora自带的sasl认证做smtp发信人认证,可是我在客户端(outlook)怎么都没发发邮件,我按postfix说明文档一步一步来都不行,这是我用postcong -n 检查出来的配置:
[root@mail root]# postconf -n
alias_maps = hash:/etc/aliases
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
html_directory = no
local_recipient_maps = unix:passwd.byname $alias_maps $local_maps
mail_owner = postfix
mailq_path = /usr/bin/mailq
manpage_directory = /usr/local/man
mydestination = $myhostname, localhost.$mydomain, localhost
mydomain = ty.taidin.com.cn
myhostname = mail.ty.taidin.com.cn
mynetworks = 192.168.0.0/24, 127.0.0.0/8, 192.168.4.0/24
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases
queue_directory = /var/spool/postfix
readme_directory = no
relay_domains = $mydestination
sample_directory = /etc/postfix
sendmail_path = /usr/sbin/sendmail
setgid_group = postdrop
smtpd_client_restrictions = permit_sasl_authenticated
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, permit_auth_destination, reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = yes
smtpd_sasl_local_domain = $myhostname
smtpd_sasl_path = smtpd
unknown_local_recipient_reject_code = 550
以下是我的maillog的日志:
[root@mail root]# tail /var/log/maillog
Aug 27 08:35:19 mail postfix/master[24381]: warning: process /usr/libexec/postfix/smtpd pid 13199 killed by signal 11
Aug 27 08:35:19 mail postfix/master[24381]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling
Aug 27 08:36:19 mail postfix/master[24381]: warning: process /usr/libexec/postfix/smtpd pid 13202 killed by signal 11
Aug 27 08:36:19 mail postfix/master[24381]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling
Aug 27 08:37:19 mail postfix/master[24381]: warning: process /usr/libexec/postfix/smtpd pid 13203 killed by signal 11
Aug 27 08:37:19 mail postfix/master[24381]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling
Aug 27 08:38:19 mail postfix/master[24381]: warning: process /usr/libexec/postfix/smtpd pid 13204 killed by signal 11
Aug 27 08:38:19 mail postfix/master[24381]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling
Aug 27 08:39:19 mail postfix/master[24381]: warning: process /usr/libexec/postfix/smtpd pid 13205 killed by signal 11
Aug 27 08:39:19 mail postfix/master[24381]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling
请哪位高手能指教?多谢了!我搞了一个星期实在弄不出来了!　　　　　　
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