[Dovecot] How to set multi backends (with same type)

hi.....

i don't know if its posible. i have two ldap directories, and i want use them to use as my dovecot users backend... so i have two configurations files... "dovecot-ldap1.conf" and " dovecot-ldap2.conf" and i try setting like:

Test 1: (simil postfix ) :D This dont work

auth default { : : passdb ldap { args= /etc/dovecot/etc/ldap/dovecot-ldap1.conf, /etc/dovecot/etc/ldap/dovecot-ldap2.conf }

userdb ldap {
    args= /etc/dovecot/etc/ldap/dovecot-ldap1.conf,

/etc/dovecot/etc/ldap/dovecot-ldap2.conf } }

Test 2: This dont work

auth default { : : passdb ldap { args= /etc/dovecot/etc/ldap/dovecot-ldap1.conf/etc/dovecot/etc/ldap/dovecot- ldap2.conf }

userdb ldap {
    args= /etc/dovecot/etc/ldap/dovecot-ldap1.conf/etc/dovecot/etc/ldap/dovecot-

ldap2.conf } }

Test 3: (looking "passbd ldap" as a set) :)

this work, but dovecot-ldap2.conf override dovecot-ldap1.conf (the set vision, none)

auth default { : : passdb ldap { args= /etc/dovecot/etc/ldap/dovecot-ldap1.conf args= /etc/dovecot/etc/ldap/dovecot-ldap2.conf }

userdb ldap { args= /etc/dovecot/etc/ldap/dovecot-ldap1.conf args= /etc/dovecot/etc/ldap/dovecot-ldap2.conf } }

¿How could i do this? :(

Thanks in advance :)

-- Salu2 ;)