In <8118232(_at_)pamho(_dot_)net> "Roger Moser"
<Roger(_dot_)Moser(_at_)pamho(_dot_)net> writes:
Mail::SPF::Query 1.998 will remove %{t} from domain-spec expansion, and
add the proposed %{c} and %{r} macros.
Where can I read the specification of the %{r} macro?
Here is one description of the %{r} macro
The "r" macro expands to the domain name of the receiving MTA.
This SHOULD be a fully qualified domain name, but if one does not
exists (as when the checking is done by a script), the word
"unknown" is substituted. The domain name MAY be different than
name found in the MX record that the client MTA used to locate the
receiving MTA.
The %{r} macro is basically the same as the undocumented %{xr} macro
used in several of the SPF implementations in order to create the
default explanation record of:
Please see http://spf.pobox.com/why.html?sender=%{S}&ip=%{C}&receiver=%{xR}
In theory, the %{xr} macro was not supposed to be able to be used by
anyone other than the SPF implementation, but it doesn't make much
sense for only the default explanation string to be able to use it.
-wayne