On Tue, Mar 29, 2016 at 08:42:12AM -0700, Michael Fischer wrote:
> On Tue, Mar 29, 2016 at 8:36 AM, /dev/rob0 <[email protected]> wrote:
>
> >> According to my reading of the documentation, if $relay_domains
> >> includes ".example.com", it should relay mail for
> >> "sub.example.com", regardless of whether or not "relay_domains"
> >> is included in $parent_domain_matches_subdomains.
> >
> > This reading is wrong.
> >
> > The leading dot pattern never matches relay_domains if the
> > p_d_m_s setting includes "relay_domains". It's not even looked
> > up.
>
> Can you please point me to relevant sections of the documentation
> that explain this? I looked and couldn't find anything other than
> how p_d_m_s works for domains that are *not* dot-prefixed.
> Documentation on dot-prefixed subdomains is not so clear.
>
> If it's not a bug, additional explanation in the documentation as
> to its behavior would be useful.
I agree. I had the same question some years ago, until it was
explained to me.
The only documentation I know of is
postconf.5.html#parent_domain_matches_subdomains and
postconf.5.html#relay_domains :
relay_domains (default: $mydestination)
What destination domains (and subdomains thereof) this system
will relay mail to. Subdomain matching is controlled with the
parent_domain_matches_subdomains parameter.
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