I've forwarded this to some standards and practices compliance people inside eBay/PayPal. I bet they'll be quite interested. I know that they were planning to do some work on their DK/DKIM infrastructure at some point. Maybe this was a side-effect.
Will advise when they reply. -MSK From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Steve Fatula Sent: Thursday, November 10, 2011 9:04 PM To: simon.brere...@buongiorno.com; postfix users Subject: Re: reject_non_fqdn_helo_hostname usefulness, safety From: Simon Brereton <simon.brere...@buongiorno.com<mailto:simon.brere...@buongiorno.com>> To: postfix users <postfix-users@postfix.org<mailto:postfix-users@postfix.org>> Sent: Thursday, November 10, 2011 9:26 PM Subject: Re: reject_non_fqdn_helo_hostname usefulness, safety Write them a note with the RFC I say. Standards are no good if you let yours slip because it's Ebay. or Google. or InsetBrandnamehere. I did exactly that. Have not heard back yet, if I ever will. I included some sample log messages so they could see some of the servers with the bad HELO name, not all of them have it, and of course the relevant RFC section. They had some Paypal/Ebay troubles today as well (some payments could not be made via Ebay checkout), and, I see they are making announced website changes starting tonight as well. Perhaps it was a lot of work and they just screwed up. Hopefully, some one who knows something will read the email and actually do something! I did whitelist them in the meantime to avoid the check.
