postfix alias and dovecot quota

[Nick Edwards]

On 6/30/14, Jiri Bourek <bourek at thinline.cz> wrote:
>
>
> On 30.6.2014 12:33, Nick Edwards wrote:
>> On 6/29/14, Alexandre Ellert <aellert at numeezy.com> wrote:
>>> Le 29 juin 2014 à 06:24, Nick Edwards <nick.z.edwards at gmail.com> a écrit
>>> :
>>>
>>>> it is the job of postfix to do this, aliases are just that, aliases of
>>>
>>>> the real mail account, they do not exist in real storage, else, they
>>>> would not be alias.
>>>
>>> The problem i'm trying to solve is about dovecot capability to serve
>>> quota
>>> status via Postfix policy server protocol.
>>> It works fine when the destination address is a real mailbox, but if it's
>>> a
>>> Postfix alias, then the email is not rejected because dovecot doesn't
>>> know
>>> this user.
>>> Maybe it's a wrong idea to try to make Postfix alias visible to dovecot.
>>>
>>> Do you have another suggestion ?
>>
>> of course its wrong
>> mail aliases are for MTA's *only*  its not for dovecot (or any
>> pop3/imap server), if postfix is not saying oh ok alias foo really
>> goes to user bar, do we;ll check out bar's quota, status etc,, then ur
>> postfix is foobarred somehow.
>>
>
> I'm not completely sure about that. If you want to use Dovecot's
> quota-status to reject message during SMTP session, Postfix' smtpd
> process needs to do that and - to my knowledge - it's only able to pass
> recipient address, not the aliases involved.
>
> I was looking for a solution to this few months ago as well. In the end
> I created sort of policy service proxy between Postfix and Dovecot. The
> proxy looks up aliases in database, converts them into real users and
> asks Dovecot about those. Final result is then reported back to
> postfix/smtpd.
>

http://dovecot.2317879.n4.nabble.com/Postfix-aliases-with-quota-status-service-td43511.html
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