The problem and solution are also described in this forum thread I've found: http://forums.gentoo.org/viewtopic-t-502523.html The USE flags mysql and ldap are selected by default from the ".../server" profile, therefore dev-libs/cyrus-sasl is usually emerged with them set. With the suggested /etc/sasl2/smtpd.conf from the guide, the following entries are produced in /var/log/auth.log on incoming mail: > Aug 10 07:39:37 x postfix/smtpd[9800]: sql_select option missing > Aug 10 07:39:37 x postfix/smtpd[9800]: auxpropfunc error no mechanism > available > Aug 10 07:39:37 x postfix/smtpd[9800]: _sasl_plugin_load failed on sasl_auxprop_plug_init for plugin: sql > Aug 10 07:58:18 x postfix/smtpd[9839]: auxpropfunc error invalid parameter supplied > Aug 10 07:58:18 x postfix/smtpd[9839]: _sasl_plugin_load failed on sasl_auxprop_plug_init for plugin: ldapdb This is fixed for me by adding sql_select: dummy ldapdb_select: dummy to /etc/sasl2/smtpd.conf. IMHO, either the guide or the default config file should be updated to reflect this.
We're not going to cover log entries in the guide, so you might want to see about either 1) fixing your USE flags at emerge time, or see if upstream's willing to change what they want logged by default. You may also want to first file a bug about the logging issues and assigning it to the ebuild maintainers; you can find their info in the "metadata.xml" file in the /usr/portage/app-category/package/ directory.
