On Mon, Dec 14, 2015 at 6:01 AM, Ian Eiloart <i...@sussex.ac.uk> wrote:
> > > On 14 Dec 2015, at 08:06, David Hofstee <da...@mailplus.nl> wrote: > > > > I am not confusing them. That would be weird. > > > > I am saying, to Brandon FWIW, that their users may be a little bit like > our customers (ie often not technical). > > But Brandon works for Google. The subject of this thread is "Delivery to > Gmail". It isn’t about his customers, and it isn’t about emails to end > users at all. It’s about how Google respond with an SMTP reject, in the > SMTP conversation, to a particular temporary DNS error. Some of us would > prefer that they used a defer instead. > This thread is now 30+ messages long, it diverged from the start by a bit, and has discussed a few different things all related to bounces. And we probably bounce/reject more mail from ourselves to ourselves than we reject to anyone else (especially if you don't count spammers). And, improving bounce messages to email users in general is a useful thing to do. And there is a complicated balancing act between 4xx and 5xx responses having to do with the likelihood of later success and what gets the problem fixed the quickest, etc. Brandon
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