Some questions

Jean-Daniel Dupas jddupas at
Wed Jul 10 17:44:21 EEST 2019

> Le 10 juil. 2019 à 14:06, Bardot Jérôme via dovecot <dovecot at> a écrit :
> Le 09/07/2019 à 17:28, Daniel Miller via dovecot a écrit :
>> On 7/9/2019 6:17 AM, Jérôme Bardot via dovecot wrote:
>>> Hello,
>>> This is my first email here.
>>> I want to understand well how dovecot is integrate with ldap in a
>>> postfix/dovecot/ldap setup.
>>> I use a debian server.
>> Perfectly!
>>> More specifically what dovecot need in ldap to work.
>>> I saw we can use several "mode" related to virtual domain, etc. For
>>> "start" i only need one domain with several address.
>>> I currently use fusiondirectory for manage my ldap users. i guess i
>>> can use that schema to auto create users email
>>> (name.firstname at domain.tld for ie) ?
>>> I also want to setup some aliases and share directory based on ldap
>>> group/role can i do it ?
>>> An other question is can we have two domain name for imap.domain.tld
>>> && smtp.domain.tld ?
>> Yes.
> There is some documentation somewhere on it ?
>> Dovecot & Postfix have no "hard" schema, or database definition, or
>> particular fields. You need to create map files which tell each server
>> how to use the information from LDAP (or any other database). Each
>> server (Postfix & Dovecot) have their own configuration which is
>> separate from each other. So you need to start with one or the other.
>> Postfix questions should be asked on the Postfix list.
>> Everything you asked for above is easily doable - just start with one
>> step at a time. Ask specific questions when you get stuck.
> The map part stuck me at this time. Can i found somewhere a list of
> field should/can be map ? I think i’m ok with postfix conf if i
> understand well i can delegate pretty all stuff to dovecot/ldap.
> An other question is :
> For all vitual stuff i always use a new user (system) with a custom
> home, all stuff i read are not clear for me about this point. There is
> some diagram with technical stuff about dovecot ?

You should start by reading

The main point if you use a single user is:

"If you're using a single UID and GID for all the users, you can specify them globally with mail_uid and mail_gid settings instead of returning them from LDAP."

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