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...
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
