> From: Sonic Support <http://www.sonic.net/~support> > Date: Mon, 10 Jun 2019 10:27:14 -0700 > > Hello Robert, > > If those reports are from our SMTP server, we passed the mail on. What email > address are you getting these errors on? You mean, the recipient address? It varies. In this case, it was to http://dummy.us.eu.org/noelleg . At other times, it has been http://dummy.us.eu.org/noelleg . It's possible that there have been other addresses, but I haven't heard about complaints about lost email to other addresses. > When mail doesn't get delivered, is it > always to the same recipient or different addresses? It seems like just two email addresses: http://dummy.us.eu.org/noelleg and http://dummy.us.eu.org/noelleg . Again, it's possible that this problem has affected another addresses, but I haven't heard about any lost messages so far. Since I have the most visibility into http://dummy.us.eu.org/noelleg and http://dummy.us.eu.org/noelleg, those are the ones I have been focusing on. In the case of http://dummy.us.eu.org/noelleg, that lands in a gmail.com Inbox. I can look at that Inbox and see that the message was never received. (I don't have the same level of visibility into http://dummy.us.eu.org/noelleg except for the fact that the email was never received at all, not even in the graymail.) > Please let us know so we can look in to this more for you. Not sure if it matters, but this set-up has been working for many, many years without a problem. It's only within the last 6 months or so that this problem has cropped up. The most annoying parts are: (1) it says that each message was delivered successfully, and (2) the dropped emails seem random and, so, it is not consistently reproducible. > Thank you,