收不到邮件问题,解决
[root@mail dovecot]# vi /etc/dovecot/dovecot.conf
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0666
    user = postfix
  }
#  unix_listener auth-client {
#    group = postfix
#    mode = 0600
#    user = postfix
#  }
    unix_listener auth-master {
        user = vmail
        group = vmail
        mode = 0666
}

[root@mail dovecot]# vi /etc/postfix/main.conf
smtpd_sasl_auth_enable = yes
smtpd_sasl_type = dovecot
smtpd_sasl_security_options = noanonymous

#smtpd_sasl_path = /var/run/dovecot/auth-client
smtpd_sasl_path = private/auth

就是说vi /etc/postfix/main.conf 里的private/auth和vi /etc/dovecot/dovecot.conf的/var/spool/postfix/private/auth要一致