Possibly related, a lot of 503 errors are starting to show up in the javascript served by Google inside Gmail...reminds me of the issue in the early morning hours (US time)...very similar to what I'm starting to see on the front end. I've not had any IPv6 emails bounce, but I do have some that are MIA from Google Apps. They were sent from one GApps domain to another, but they haven't materialized on the other end...but they also haven't bounced back to me. As a matter of curiosity, I also sent my personal Gmail account email over v6, and it's doing the same thing...either it's delayed or it's going to bounce. The front-end of Gmail is starting to behave weirdly, as well, spitting out bizarre errors like "technical code: undefined", and saying it wasn't able to send a message, but the message going through. There's a fair amount of chatter about this on Twitter, so I know it's not just me. It also thinks it's offline in one tab, when an account in another is perfectly fine. Maybe a DC somewhere is having trouble again? On Tue, Jan 14, 2014 at 8:10 PM, Christopher Morrow <morrowc.lists@gmail.com
wrote:
On Tue, Jan 14, 2014 at 8:51 PM, Ted Cooper <ml-nanog090304q@elcsplace.com> wrote:
On 15/01/14 10:06, Brandon Applegate wrote:
Off-list replies are fine to minimize noise, and if there is an answer or any meaningful correlation I will reply on-list. Thanks in advance for any info/feedback.
brandon, I didn't get your original... but could you ping me off-list and maybe I can get some data about what it is you're seeing? :)
I have been running into these a lot also and have so far concluded that it is an error within Google. The PTR/AAAA, SPF and DKIM are all matched up and tested as working. It also occurring on domains using google apps to handle their email so it is platform wide. All of the emails are personal emails, but coming from multiple domains/senders.
The exact same email will be rejected when sent to any google IPv6 server for minutes/hours, but 3-4 hours later it will be accepted without error.
The fact that it is being hard rejected is really quite annoying and generating a lot more support work.
Unfortunately, my only fix at present is to turn off IPv6 delivery for all google hosted domains as I encounter them. It would be really nice if it was fixed.
My theory is that they are failing PTR lookups.