测试邮件认证失败~~~~

stardust

测试PLAIN认证方式：
telnet localhost 25
AUTH PLAIN dGVzdGVyAHRlc3RlcgB0ZXN0cHc=
535 Error: authentication failed

察看/var/log/message显示
Dec 20 17:01:38 localhost saslauthd[20462]: PAM (smtp) illegal module type: accout
Dec 20 17:01:38 localhost saslauthd[20462]: Table 'mail.user' doesn't exist
Dec 20 17:01:38 localhost saslauthd[20462]: Unknown column 'User' in 'field list'
Dec 20 17:01:38 localhost smtp(pam_unix)[20462]: check pass; user unknown
Dec 20 17:01:38 localhost smtp(pam_unix)[20462]: authentication failure; logname= uid=0 euid=0 tty= ruser= rhost=
Dec 20 17:01:41 localhost saslauthd[20462]: do_auth : auth failure: [user=tester] [service=smtp] [realm=] [mech=pam]

第一行我不知道什么意思
但第二行我在mysql中存在mail库和user表呀，其他就不太明白了。希望那个有经验兄台能指点一二