On Wed, Nov 05, 2025 at 08:10:15AM -0500, Wietse Venema via Postfix-users wrote:
> Viktor Dukhovni via Postfix-users:
> > On Wed, Nov 05, 2025 at 08:55:15AM +0100, Edgar Fu? via Postfix-users wrote:
> > > > It is very likely that the OP is testing with an address that is subject
> > > > to rewriting.
> > >
> > > It must be something else.
> >
> > Why? What is the evidence that the recipient address is not listed in
> > any canonical_maps, recipient_canonical_maps or virtual_alias_maps?
> >
> > > Even if I use the static: table example
> >
> > What static table?
>
> transport_maps = static:{retry:ydaddayadda}
>
> I would be very surprised if there is a way to accept RCPT TO without
> involving the trivial-rewrite resolver, because that is needed to
> prevent unauthorized relaying, user%remote@local attacks, and more.
Sure, but the check that responds with 4XX or 5XX for the "retry" and
"error" transport channels, is (corectly) conditional on the address not
being subject to rewrite. Otherwise, only the address class matters.
--
Viktor. 🇺🇦 Слава Україні!
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