On Mon, Aug 14, 2023 at 11:54:16PM +0200, lutz.niede...@gmx.net wrote:
> Ah, still one question. I don't remember exactly where, but I believe
> that you said it would be better to split into separate instances.
> Sorry, can't find it anymore.
https://www.postfix.org/MULTI_INSTANCE_README.html
> Both instances would work in parallel on the domain socket (unix:...)
> to dovecot (lmtp authentication & delivery). Do we have to expact any
> problems with that or is it safe?
Multi-instance Postfix configurations (and even multiple SMTP services
within a single master.cf(5) file) require separate TCP listener
endpoints, so generally a separate IP address or separate ports. The
outbound service could perhaps be a submission service on port 587.
Noel's advice makes it possible to preserve the error message quality
while using the suggested table within a single instance. But, as
always, I recommend split configurations once you start adding
non-trivial direction-dependent policy.
--
Viktor.
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