Robert Senger via Postfix-users:
> Hi Viktor,
>
> thank you. So, it's not possible to route email different when sent
> from an authenticated user through port 587, than imcoming email sent
> through port 25? This would avoid a loop, as far as I understand
> things...
Postfix routing does not care if email was received via MUA service
(submission), MTA service (port 25), command line, or otherwise,
You can override routing in the port 587 SMTP daemon with content
filter actions, for example, a check_sender_access map with
"u...@example.net FILTER smtp:isp-for-example-net" but configuration
will be simpler without context-dependent routing.
Wietse
> I think I'll set up a separate instance for the external accounts in
> the long run.
>
> Regards,
>
> Robert
>
>
> Am Montag, dem 24.07.2023 um 10:00 -0400 schrieb Viktor Dukhovni via
> Postfix-users:
> > On Mon, Jul 24, 2023 at 03:53:17PM +0200, Robert Senger via Postfix-
> > users wrote:
> >
> > > I have a few freemail accounts that I use mainly for testing and
> > > special purposes. All those accounts are forwaring incoming mail to
> > > a
> > > corresponding account at my ow server, like
> > > "r.senger_<espname>@example.com". For sending, I've defined
> > > sender_dependent_relayhost_maps that relay all mail sent by any of
> > > these accounts to the ESP's smpt server (credentials stored in
> > > sasl_passwd).
> > >
> > > That works fine as long as mail ist sent to foreign domains. But if
> > > I
> > > send mail from one of these local accounts to any recipient at the
> > > local domain, e.g. robert.sen...@example.com, it gets delivered
> > > locally
> > > rather that though the ISP's server, since
> > > sender_dependend_relay_host_maps has low priority. This can for
> > > example
> > > cause issues if the mail goes to a locally hosted mailinglist,
> > > since it
> > > misses the ESP's dkim signature when sent out to the subscibers.
> > >
> > > Is there a possibility to get all mail sent from a certain local
> > > authenticated user through an external relay, even if the recipient
> > > is
> > > a local virtual user?
> > >
> > > I know I could configure the MUA to use the ESP's smpt server, but
> > > that's not desired. I think a multi instance setup could do that
> > > job,
> > > but that requires a lot reconfiguration of the system.
> >
> > What you propose would loop, when the mail returns to your system for
> > delivery.? The simplest approach is a separate Postfix instance that
> > for outbound mail that does not have any "local" domains, all mail
> > is relayed somewhere else, possibly to the inbound instance for local
> > delivery.
> >
> > ??? https://www.postfix.org/MULTI_INSTANCE_README.html
> >
>
> --
> Robert Senger
>
>
>
> _______________________________________________
> Postfix-users mailing list -- postfix-users@postfix.org
> To unsubscribe send an email to postfix-users-le...@postfix.org
>
_______________________________________________
Postfix-users mailing list -- postfix-users@postfix.org
To unsubscribe send an email to postfix-users-le...@postfix.org
