[Dovecot] LDAP filters

Hello all.

I'm have this problem:

I'm want auth users by "uid" filed but this filed uniq only in one LDAP container. So im what to tell dovecot were to look some "uid" by "mail" filed of this user.

Can im do this:

pass_filter = (&(objectClass=mailUser)(mail=*@%d)(uid=%n))

Will this construction work?

-- Best regards, Proskurin Kirill