[CentOS] Dovecot SLOW with sssd in centos 6

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http://centos.1050465.n5.nabble.com – Hello, I have a big performance problem with a mail server using dovecot and authenticating users via ldap. The architecture of the machine is a local ldap and mysql server, they are used by dovecot for authenticating the mail users. If i use pam_sss the mail server has about 1/8 - 1/10 the performances it has if i use the pam_ldap. Even doing a 'time ls -l' on the mail tree (there are about 3000 ldap users in that directory) it is very very slow, the first time I try to do it after a reboot, it takes about 6 minutes with sssd, and about 8 seconds with ldap. Since I know sssd is recommended, a (HowTos)