On Thu, May 26, 2016 at 04:30:15PM +0300, Romaneev Vasily wrote:
>
> / External relay 1
>
> Smtp client -> milter -> postfix - Local mail
> \ External relay 2
>
>
> Now i'm route this messages via transport, based on X-MAC header, which set
> by milter.
What is the purpose of this milter? Routing by header rather than
envelope easily creates mail forwarding loops and must be avoided.
> What is the best way to send local mail via local transport and external
> mail via another relays ? How can i mark message(or all messages from
> sending_domain) to choose relay for external emails.
The best way is to not let milters make routing decisions.
--
Viktor.
