Michael Best wrote:
What or how does some mail client produces this as the subject?
It only appears to happen when I reply to an email on a mailing list. With normal email, person-to-person email, that never happens. I don't really understand it. It looks like the references header is being appended to the Subject, perhaps the headers are being reordered poorly or something.
I'm using Thunderbird 1.0, btw.