dovecot 收不到邮件，不知道怎么回事？？

我的是postfix+dovecot+mysql认证的，OE认证没问题，往外网发邮件也没问题就是收不到，自己给自己发都收不到，查了很多资料，还没整明白，很是苦恼，请高手指点，我把postfix和dovecot的配置文件发一下，看看有什么地方不对阿
dovecot的配置文件：
protocols = pop3 imap
listen = *
disable_plaintext_auth = no
log_path = /var/log/dovecot.log
info_log_path = /var/log/dovecot.info
log_timestamp = "%Y-%m-%d %H:%M:%S "
#ssl_disable = yes
#mail_location = maildir:/%Lh/%Ld/%Ln/:INDEX=/%Lh/%Ld/%Ln/
mail_location = maildir:/var/vmail/%d/%n
#mail_location = maildir:/var/vmail/%d/%n
#mail_location = maildir:/var/vmail/%d/%n/Maildir
#default_mail_env = maildir:/var/mailbox/%d/%n
mail_privileged_group = mail
first_valid_uid = 12345
protocol imap {

}
protocol pop3 {
pop3_uidl_format = %08Xu%08Xv
}
#protocol managesieve { ＃＃＃我这只所谓打＃是因为不打的话dovecot过不去，所以就打上了过去了，这没大问题吧
# sieve=~/.dovecot.sieve
# sieve_storage=~/sieve
#}

auth default {
mechanisms = plain login
passdb pam {
}
passdb sql {
args = /usr/local/dovecot/etc/dovecot-sql.conf
}
userdb passwd {
}

userdb sql {
args = /usr/local/dovecot/etc/dovecot-sql.conf
}

user = root
socket listen {
client {
path = /var/spool/postfix/private/auth-client
mode = 0660
user = postfix
group = postfix
}
}
}


postfix的配置文件：

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
mail_owner = postfix
mailq_path = /usr/bin/mailq
manpage_directory = /usr/local/man
newaliases_path = /usr/bin/newaliases
queue_directory = /var/spool/postfix
readme_directory = no
sample_directory = /etc/postfix
sendmail_path = /usr/sbin/sendmail
setgid_group = postdrop
unknown_local_recipient_reject_code = 550
################################################################################
myhostname = mail.ludy.com
mydomain = ludy.com
myorigin = $mydomain
mydestination =
mynetworks = 127.0.0.0/8，192.168.1.0/24
inet_interfaces = all
home_mailbox = Maildir/
############################################################################
virtual_alias_maps = mysql:/etc/postfix/mysql/mysql_virtual_alias_maps.cf
virtual_gid_maps = static:33
virtual_mailbox_base = /var/vmail ###虚拟用户目录
virtual_mailbox_domains = mysql:/etc/postfix/mysql/mysql_virtual_domains_maps.cf
virtual_mailbox_maps = mysql:/etc/postfix/mysql/mysql_virtual_mailbox_maps.cf
virtual_minimum_uid = 123456 ### 给 apache 权限。
virtual_transport = virtual
virtual_uid_maps = static:123456
#################################################################################
message_size_limit = 52428800
mailbox_size_limit = 209715200
virtual_mailbox_limit = 209715200
virtual_create_maildirsize = yes
virtual_mailbox_extended = yes
virtual_mailbox_limit_maps = mysql:/etc/postfix/mysql/mysql_virtual_mailbox_limit_maps.cf
virtual_mailbox_limit_override = yes
virtual_overquota_bounce = yes
#################################################################################
smtpd_sasl_auth_enable = yes
smtpd_sasl_type = dovecot ###定义安装方式 dovecot
smtpd_sasl_path = private/auth-client ##### 路径要与 dovecot 一样
broken_sasl_auth_clients = yes
smtpd_recipient_restrictions = permit_mynetworks,
permit_sasl_authenticated,
reject_invalid_hostname,
reject_non_fqdn_hostname,
reject_unknown_sender_domain,
reject_non_fqdn_sender,
reject_non_fqdn_recipient,
reject_unknown_recipient_domain,
reject_unauth_pipelining,
reject_unauth_destination