On Wed, Nov 23, 2022 at 04:54:19PM +0000, Juan Smitt Jr wrote:
> > These restrictions only make (modest) sense on an outbound relay MTA
>
> Yes, this is exactly the case. Tons of customers sending tons of
> emails to various addresses. Some are just entirely made up, some just
> contain typos.
Customer submission users using MUAs, or customer MTAs relaying through
your system. It sounds more like the latter...
> So can we say that on a relay server such as ours it won't do any harm
> to enable these options?
If you're operating a relay for customer MTAs which you don't also
manage, then these restrictions will leave mail to bogus destinations
that soft-fail in their queue rather than yours, and will reject rather
than accept then bounce the hard failures.
This may sweep the problem partly under the rug, but the real problem,
for which I don't have much sympathy is offering relay service to
customers that spam junk addresses. May you have all the luck you
deserve.
--
Viktor.
