On Wed, Jan 29, 2025 at 01:46:59PM +0100, Matus UHLAR - fantomas via mailop
wrote:
> > On 2025/01/28 16:55, Fehlauer, Norbert via mailop wrote:
> > > if a domain has no mx record than a fallback to A/AAAA for the
> > > domain is possible. Is this fallback only to happen when no mx
> > > record exists for the domain or can this fallback happen when no
> > > connection to the mx defined servers is possible? I would "guess"
> > > that it only should happen if there are no mx records at all. Can
> > > someone confirm this?
>
> Correct, although I believe this behaviour should be deprecated.
This is a somewhat popular view, though I've seen little empirical
evidence to support it. For the moment, this is an acceptable way to
operate an email domain, and I'd say a "non-negligible", if small,
fraction of domains get by with no MX records.
--
Viktor.
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