DOVECOT con supporto mysql 

La stessa cosa vista x postfix la si può fare x Dovecot: wget http://download.fedora.redhat.com/pub/fedora/linux/core/development/source/SRPMS/dovecot-1.0-2.rc17.fc7.src.rpm rpm -Uhv dovecot-1.0-2.rc17.fc7.src.rpm wget http://www.dovecot.org/releases/dovecot-1.0.rc22.tar.gz cp dovecot-1.0.rc22.tar.gz /usr/src/redhat/SOURCES/ cd /usr/src/redhat/SPECS vi dovecot.specs cambio  %define build_postgres 0 Release .......   yum install gettext-devel  rpmbuild -ba dovecot.specs rpmbuild -bb dovecot.specs  cd /usr/src/redhat/RPMS/i386/  rpm -Uhv ./dovecot-*   Seguo  http://wiki.dovecot.org/DovecotLDAPostfixAdminMySQL