fatal: no SASL authentication mechanisms

缺少 plugin
裝上 libsasl2-plug-plain-2.1.12-1mdk.i586.rpm
libsasl2-plug-crammd5-2.1.12-1mdk.i586.rpm
即可

-rw-r--r-- 1 nobody nogroup 11101 3月 6 2003 libsasl2-plug-anonymous-2.1.12-1mdk.i586.rpm
-rw-r--r-- 1 nobody nogroup 12813 3月 6 2003 libsasl2-plug-crammd5-2.1.12-1mdk.i586.rpm
-rw-r--r-- 1 nobody nogroup 25606 3月 6 2003 libsasl2-plug-digestmd5-2.1.12-1mdk.i586.rpm
-rw-r--r-- 1 nobody nogroup 15567 3月 6 2003 libsasl2-plug-gssapi-2.1.12-1mdk.i586.rpm
-rw-r--r-- 1 nobody nogroup 11382 3月 6 2003 libsasl2-plug-login-2.1.12-1mdk.i586.rpm
-rw-r--r-- 1 nobody nogroup 14042 3月 6 2003 libsasl2-plug-ntlm-2.1.12-1mdk.i586.rpm
-rw-r--r-- 1 nobody nogroup 32779 3月 6 2003 libsasl2-plug-otp-2.1.12-1mdk.i586.rpm
-rw-r--r-- 1 nobody nogroup 11435 3月 6 2003 libsasl2-plug-plain-2.1.12-1mdk.i586.rpm
-rw-r--r-- 1 nobody nogroup 12723 3月 6 2003 libsasl2-plug-sasldb-2.1.12-1mdk.i586.rpm
-rw-r--r-- 1 nobody nogroup 29700 3月 6 2003 libsasl2-plug-srp-2.1.12-1mdk.i586.rpm
-rw-r--r-- 1 nobody nogroup 26794 3月 6 2003 libsasl7-1.5.28-5mdk.i586.rpm
-rw-r--r-- 1 nobody nogroup 8294 3月 6 2003 libsasl7-plug-anonymous-1.5.28-5mdk.i586.rpm
-rw-r--r-- 1 nobody nogroup 11149 3月 6 2003 libsasl7-plug-crammd5-1.5.28-5mdk.i586.rpm
-rw-r--r-- 1 nobody nogroup 19790 3月 6 2003 libsasl7-plug-digestmd5-1.5.28-5mdk.i586.rpm
-rw-r--r-- 1 nobody nogroup 11964 3月 6 2003 libsasl7-plug-gssapi-1.5.28-5mdk.i586.rpm
-rw-r--r-- 1 nobody nogroup 9317 3月 6 2003 libsasl7-plug-login-1.5.28-5mdk.i586.rpm
-rw-r--r-- 1 nobody nogroup 9345 3月 6 2003 libsasl7-plug-plain-1.5.28-5mdk.i586.rpm

Pre-requisites
The first thing you need to do is have a version of postfix installed that has SASL support enabled. Recently, MandrakeSoft issued updates to postfix that provided fixed SASL support for 8.1 and introduced SASL support in 8.0 (for more information, view the advisory, MDKA-2002:003). These versions of postfix (postfix-20010228-6.2mdk for 8.0 and postfix-200102280-15.2mdk for 8.1) provide proper SASL support and can be upgraded via MandrakeUpdate. You will also need the Cyrus SASL library files, which you can also obtain from updates due to a security fix (MDKSA-2002:018). These updates are available for 8.0 and 8.1 also.

You will need to have the basic components installed: cyrus-sasl and libsasl7. To enable the authentication methods, you will need the appropriate plugin. For example, to enable CRAM-MD5 authentication, you will need to install the libsasl7-plug-crammd5 package; for PLAIN authentication, you will need the libsasl7-plug-plain package. You can install the specific plugin you wish, or simply download and install all of the plugins (anonymous, crammd5, digestmd5, login, or plain).

Once you have upgraded and/or installed the appropriate packages, you're ready to configure postfix and Cyrus SASL. 8.2 users can install postfix and the SASL packages from their install CDs.