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" > ... > 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... -Kees -- Kees Cook Nexus Security -- 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