[Dovecot] Please clarify one point for me on director userdb (Was: Configuration advice needed.)

Olivier Girard Olivier.Girard at univ-angers.fr
Mon Jun 3 16:47:08 EEST 2013

I'm trying to finish my dovecot setup but things are unclear for me.

I want director proxying mapping to same server for LMTP and POP/IMAP
connections. My authdb is LDAP and LMTP user are queried with mail
adress (ldap mail attribute) while IMAP/POP users are identified with 
uid (ldap uid attribute) wich is completly different.

So i end up defining my ldap querys mapping ldap mail attribute to user
in *_attrs (best choice for future use than uid for our setup) with this
configuration in dovecot-ldap.conf.ext:

uris = ldap://ldap.uang
dn = cn=acces-smtp, ou=access, dc=univ-angers, dc=fr
dnpass = *********
base = ou=people, dc=univ-angers, dc=fr
user_attrs = mail=user,homeDirectory=home
user_filter = (&(|(uid=%u) (mail=%u) 
pass_attrs = mail=user,userPassword=password
pass_filter = (&(|(uid=%u) (mail=%u) (auaAliasEmail=%u)) 
iterate_attrs = mail=user
iterate_filter = 
default_pass_scheme = MD5-CRYPT

Is it the correct method, or do i miss something?

Le 31/05/2013 12:52, Olivier Girard a écrit :
> Hello,
> First, thanks for this great piece of software.
> I'm new to dovecot and i've just converted my old courier configuration
> on pop/imap server side, everithing is working just fine on this side
> and speed gain expected was found (not enough for our busy servers :).
> Setup is done with 3 dovecot virtual servers load balanced with a
> Hardware load balancer (this part is a big point of the question).
> Postfix and dovecot servers use an NFS share on a NetApp for mail,
> Postfix servers are writting directly to inbox maildirs.
> Load balanced is maintaining afinity betwen client and server so i've
> got no problem with this for the moment.
> Now, i want to setup postfix (3 HW load balanced) for local delivery
> with LMTP on deovecot servers, and here come my questions.
> Afinity can't be maintained between IMAP and LMTP for a user with my
> load balancer so mail can be delivered on dovecot01 and read on
> dovecot02, from what i've read this can be an issue with indexes.
> I think i need to setup a director to maintain LMTP and IMAP afinity
> between users and servers but on imap servers i'm identifying user
> with their UID, and LMTP need to see emails.
> Does dovecot see the same user or 2 users with the same homedir?
> So my question is: could you point me to the right direction with this
> setup, do you have any advice on this config.

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