Pavel Bychikhin:
> Wietse,
>
> I understand that REDIRECT is not by far the best option.
>
> What if I add another smtpd daemon to master.cf with different
> "virtual_alias_maps" parameter, and FILTER mails that match the policy
> to than new daemon for final delivery?
>
> Will it work or because there is only one cleanup daemon, only one set
> of aliases will be used anyways?
>
> Thank you
>
> Best regards,
> Pavel
>
> On 11/24/2017 9:20 PM, Wietse Venema wrote:
> > Pavel Bychikhin:
> >> Dear Community,
> >>
> >> I need Policy-based aliases - the aliases that would be different for
> >> different sender/recipient pairs.
> >>
> >> For example if j...@somedomain.com writes to supp...@mydomain.com, the
> >> recipient address will expand to u...@mydomain.com and u...@mydomain.com.
> >>
> >> But if m...@otherdomain.com writes to supp...@mydomain.com, the
> >> recipient address will expand to u...@mydomain.com and u...@mydomain.com.
> >>
> >> Is it possible in Postfix? If so, how to implement in most efficient way?
> > This can be done with a Milter program. Milters can add or replace
> > recipients (and modify the message). Milters can be implemented in
> > a variety of languages including C, Python and Perl. Its's better
> > than having some non-standard Postfix-specific built-in programming
> > language,
> >
> >> So far I see two options: REDIRECT and dedicated smtp daemon with
> >> different alias settings as a FILTER.
> > REDIRECT overrides ALL recipients, which may or may not be a problem.
>
I recommend that you use a Milter and delete/add recipients
as appropriate.
Sorry, I will not attempt to prescribe a FILTER-based solution.
There is not enough time in the day.
Wietse
