On Mon, Mar 23, 2026 at 03:17:47PM +0000, Sad Clouds via Postfix-users wrote:
> On Mon, 23 Mar 2026 09:16:56 -0400 (EDT)
> Wietse Venema via Postfix-users <[email protected]> wrote:
>
> > LMTP straddles the two worlds: the protocol looks like SMTP (on a
> > different port), but it is really a mailbox delivery protocol.
>
> The examples I had earlier used Unix domain sockets, but I guess there
> is no technical reason why LMTP can't be used with TCP sockets on a
> LAN. So I'm thinking of it as a remote mailbox delivery protocol.
Yes, but it is not store and forward, SMTP relaying. The recommended
BCP configuration approach is to treat these as virtual mailbox domains.
You can make your own choices of course, but since you asked, you'll
get the answer that fits best current practice and is more like to be
understood by others.
--
Viktor. 🇺🇦 Слава Україні!
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