On Tue, Jul 6, 2010 at 15:58, Victor Duchovni wrote: > On Sat, Jul 03, 2010 at 02:15:53AM +0200, Fran Garcia wrote: > >> Basically the schema should : >> >> - Be OpenLDAP compatible > > Not a problem. > >> - Allow multidomain > > I don't know what this means.
Hi Viktor, thanks for your reply. This means "be able to hold several virtual domains as destination". Think of an ISP configuring a shared email platform for several domains / customers. Ideally those domains would be held in LDAP as well. (I've seen the qmail.schema and apparently is only ready fo one single domain). >> - Host transports for each defined account / email address. > > This is not a good idea. Avoid using LDAP for transport lookups. > Instead: > > - rewrite envelope recipients to an appropriate destination > domain via virtual(5) (i.e. virtual_alias_maps). > > - explicitly set virtual_alias_domains (even if empty). > > - Map each destination domain to a suitable transport via > an indexed file (Berkeley DB hash or btree, CDB, ...) The rationale for requesting this was "how do I grow if I have say 100k accounts in a single domain and I want to spread the load on several backend servers". As per your description, that would be handled like : us...@example.org -> us...@internal_backendx.example.org ? >> - Integrate with dovecot and/or cyrus-imapd. > > Postfix will happily use any schema in which lookup keys > (typically email addresses) can be mapped to a result > value (or list of values which are transformed to a comma-separated > result string) by a query as explained in: > > http://www.postfix.org/ldap_table.5.html > http://www.postfix.org/LDAP_README.html > > Postfix has no preferred LDAP schemas, it operates at a higher level of > abstraction, i.e. virtual_alias_maps, transport_maps, ... which can be > implemented via LDAP if you so choose. The mapping between an actual > LDAP dataset and the conceptual Postfix key/value table is up to you. Thanks for the links :-) . I already came across the "postfix adapts to any ldap schema" but, since I'm starting with ldap and not very familiar with all the concepts, I wanted to get some reall ife examples of actual schemas people are using. cheers
