Alex van den Bogaerdt wrote:
Should we better propose "v=spf1 ptr -all" as typical HELO policy ?
Absolutely not.
Yeah, Stuart already convinced me that this idea wasn't good. But I
don't get your reasoning:
This would match any subdomain of "museum.", including domains in
a different zone. Perhaps this example is not suited well, but
imagine a similar hostname "de." with such a policy ... Your
suggestion would allow your host to say "HELO de".
At the moment my host is xyzzy.dnsalias.org = 80.171.252.210
When I try nslookup -q=ptr 80.171.252.210 I get
210.252.171.80.in-addr.arpa name = d252210.dialin.hansenet.de
But "host" de doesn't have IP 80.171.252.210, it shouldn't match.
Besides TLD de also has no SPF policy using "v=spf1 ptr -all".
Something with your counterexample is wrong or I miss a clue.
[TLD ws]
There does not seem to be running a mailserver at this domain,
at least not one I can reach.
If somebody has already implemented 2821bis draft 01 that would
be very fast... :-)
?
One doesn't need to receive mail in order to send mail. No 2821bis
needed for that.
Strict 2821 implementations could reject "HELO ws" and "HELO ws."
as SMTP syntax errors.
Frank
-------
Sender Policy Framework: http://www.openspf.org/
Archives at http://archives.listbox.com/spf-discuss/current/
To unsubscribe, change your address, or temporarily deactivate your
subscription,
please go to http://v2.listbox.com/member/?list_id=735