Hi - I've removed the "[XeTeX]" prefix on Subject lines from this mailing list (xetex)'s messages. It is my hope that this will reduce the ever-increasing flood of dmarc failures (https://en.wikipedia.org/wiki/DMARC).
This was first noticed with Yahoo, long ago, which did not matter much, then with icloud etc., which was worse, and now I see it from lots of other email providers, government institutions, universities, large companies, etc. It is hard to discern exactly when the errors happen (often it's when address x is subscribed, and x forwards to y), but they are increasingly common. The List-Id: header identifies the mailing list for mailing list messages. I know it is less convenient, but that is the Internet today. I'm going to be doing this on other tug lists too as time goes on; all of them eventually, I expect. I am discouraged by the need to kowtow to dmarc's draconian breakage of standard mailing list usage, but there is no viable alternative. -k
