Hi,

I moved from a mailserver using exim/mysql to one based on postfix/ldap and 
found a question I couldn't answer by searching:

Is there a way to put "email aliases like I'm used to" into the directory?

By "email aliases like I'm used to" I mean 1-m aliases with the following 
properties:

- An email received for an alias address is send to multiple maildrops and/or 
email addresses

Additinally I'd like to add information about ownership/permissions:

- An alias has got one or more owner(s) who
        - are able to edit the list of receivers
        - are allowed to delete the alias
        - change permission on it like described below
- An alias has properties that describe the permission local receivers have
  (for all of the local receivers or every single local):
        - its open to subscription by every uid (user on the system) or only 
the owners are
          allowed to add new receivers
        - delete oneself from the list of receivers
        - allowed to use the alias address as email sender for emails delivered 
by the account

I know this sounds like mailinglist, but most of that has been possible in exim 
using files and file permissions or values in a mysql database. A listmanager 
would add some interface for managing this, but that is not what I'm looking 
for.

I'm looking for an existing standard or quasi-official way on how to represent 
this in the directory before inventing the wheel a second time.

Along my way I stumbled over this two messages on the list which seem to point 
in a similar direction:

https://lists.openldap.org/hyperkitty/list/[email protected]/thread/MF457XILOV3ACZOGWA3VBUOAB4RDHHVA/#MF457XILOV3ACZOGWA3VBUOAB4RDHHVA
https://lists.openldap.org/hyperkitty/list/[email protected]/message/P4AF6OZTPTFBGT6S7DQV5EQVWXZ5ZPTF/

Thanks for any references or help
Chris

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