post...@ptld.com:
> > On 07-07-2021 5:31 pm, Richard wrote:
> >
> > If the "hostname has no DNS A ... record", i.e., the *hostname*
> > presented on the HELO/EHLO doesn't resolve, then no IPnumber will be
> > returned [to do anything with].
>
> Yes, if the hostname has no DNS records then ofcourse it has no IP. But
> if the hostname DOES have DNS records, which is needed to pass the test,
> then postfix now has that IP. Logically since the work has been done to
> get that IP, it would be nothing for postfix to do a quick compare to
> know if the helo is valid or spoofed compared to the connecting client.
> The manual does not say it does, or does not, do anything with that IP,
> but it does say that it does get that IP, I just wanted to clarify. I
> didn't know i would get roasted this much for asking.
The principle is very simple: Postfix documentation describes what
Postfix does.
The documentation does not describe all the things that Postfix
does not do. That would make the documentation much larger, and
much harder to read.
Wietse
