测试邮件系统：telnet localhost 25时的问题~

已经安装过postfix和cyrus-sasl了，在验正服务启动状况时输入telnet localhost 25之后得情况，还有maillog日志里的纪录，我都放上来，高手来帮我看看这啥情况啊...
备注：之前网上查了，说是要建立外链：ln -s /usr/local/lib/sasl2 /usr/lib/sasl2 试了还是不行啊
[root@localhost ~]# telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
Connection closed by foreign host.
日志：
Jul 9 17:36:44 localhost postfix/postfix-script[3165]: refreshing the Postfix mail system
Jul 9 17:36:44 localhost postfix/master[3145]: reload -- version 2.6.2, configuration /etc/postfix
Jul 9 17:36:48 localhost postfix/smtpd[3171]: connect from localhost.localdomain[127.0.0.1]
Jul 9 17:36:48 localhost postfix/smtpd[3171]: warning: xsasl_cyrus_server_get_mechanism_list: no applicable SASL mechanisms
Jul 9 17:36:48 localhost postfix/smtpd[3171]: fatal: no SASL authentication mechanisms
Jul 9 17:36:49 localhost postfix/master[3145]: warning: process /usr/local/postfix/libexec/smtpd pid 3171 exit status 1
Jul 9 17:36:49 localhost postfix/master[3145]: warning: /usr/local/postfix/libexec/smtpd: bad command startup -- throttling