Stephane Bortzmeyer wrote:
[skipping tons of interesting stuff]
%{i}._.%{h}._.%{s}._.%{r}.spf-tracker.example.net
although experience seems to indicate that %{r} is not widely
implemented.
That's a feature and no bug, SPF doesn't want to be some new
kind of spyware with message tracking:
| The following macro letters are only allowed in "exp" text:
[...]
| r = domain name of host performing the check
Same text in drafts lentczner-00, schlitt-00, and schlitt-01.
It was changed after mengwong-01, hey, _you_ are the privacy
expert, not me ;-)
Bye, Frank