good morning, i've got many issues trying to configure cyrus-sasl-sql smtp AUTH. here are some specs: [root@rastaban ~]# /usr/sbin/pluginviewer -a Installed auxprop mechanisms are: sasldb List of auxprop plugins follows Plugin "sasldb" , API version: 4 supports store: yes [root@rastaban ~]# rpm -qa | grep cyrus cyrus-sasl-md5-2.1.22-4 cyrus-sasl-lib-2.1.22-4 cyrus-sasl-plain-2.1.22-4 cyrus-sasl-2.1.22-4 cyrus-sasl-sql-2.1.22-4 cyrus-sasl-devel-2.1.22-4 cyrus-sasl-gssapi-2.1.22-4 the plugins are located in /usr/lib/sasl2/ my /usr/lib/sasl2/smtpd.conf: [root@rastaban cyrus-sasl-2.1.21]# cat /usr/lib/sasl2/smtpd.conf pwcheck_method: auxprop mech_list: PLAIN LOGIN auxprop_plugin: sql sql_engine: mysql sql_hostnames: localhost sql_database: postdb sql_user: *** sql_passwd: *** sql_select: SELECT clear FROM postfix_users WHERE email = '%u@%r' and my auth.log: Mar 21 11:07:48 rastaban postfix/smtpd[30417]: sql_select option missing Mar 21 11:07:48 rastaban postfix/smtpd[30417]: auxpropfunc error no mechanism available Mar 21 11:07:48 rastaban postfix/smtpd[30417]: _sasl_plugin_load failed on sasl_auxprop_plug_init for plugin: sql simply many plugins don't work. i tried to recompile from source (with a client.c patch) but without goals! i tried the same configuration in 2 different cento's, but none's working. any idea? Thanks a lot! luca rossi