On Jun 3, 2014 12:06 AM, <st...@thornet.co.uk> wrote: > > > > > you *do not* lose anything > > > > 451 is a *temporary* error > > 5xx would be a complete reject > > > > Yes, but many mails rejected in an incident this morning haven't been resent. I guess we're dealing with broken clients. >
What sort of "broken" clients are these that don't use real email servers, and how do you know they are broken? They could very well be waiting for some time to pass before retrying again (and there is some kind of a system for these intervals. It's not as if the standard protocol is to resend all of your undelivered email every 5 minutes...) -jf
