Kees Cook <keescook@xxxxxxxxxxxx> writes: > On Fri, Nov 4, 2016 at 11:45 AM, Oleg Nesterov <oleg@xxxxxxxxxx> wrote: >> Eric, I hope you see my emails, I got the "Undelivered Mail Returned to Sender" >> ... Oleg I can receive your messages directly and through vger.kernel.org lists, but I can't receive them through the email reflector at security@xxxxxxxxxx. >> This is the mail system at host mail.kernel.org. >> ... >> <ebiederm@xxxxxxxxxxxx> (expanded from <security@xxxxxxxxxx>): host >> mx.xmission.com[166.70.12.20] said: 550-XM-RJCT16: SPF Failure >> (ip=198.145.29.136, frm=oleg@xxxxxxxxxx, 550 result=fail) (in reply to RCPT >> TO command) >> >> right now I have no idea what does this mean. > > This is a problem for Google folks too sometimes. This is saying that > xmission.com is checking redhat.com's SPF records and refusing to let > kernel.org deliver email as if it were redhat.com (due to > security@xxxxxxxxxx being an alias not a mailing list). There aren't > good solutions for this, but best I've found is to have my > security@xxxxxxxxxx alias be a @kernel.org address instead of an > @google.com address... Ugh. Is even redhat configuring the redhat email to do that? I will have to look. Last I looked xmission.com was just enforcing the policy that the other mail domains were asking to be enforced on themselves. But those are policies that are incompatible with mailing lists in general. Although I do get confused about which part SPF and DKIM play in this mess. I just remember that the last several ``enhancements'' to email were busily breaking mailing lists and I thought they were completely insane. I can even find evidence that it is (or at least was) so bad that email standards comittee member's can't comminicate with each other via email lists. vger.kernel.org appears to rewrite the envelope sender to avoid problems. If xmission is doing any more than just performing what the domain of the senders of email asked them to do I will be happy to see if I can to sort it out. Eric -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
