I just got the following email bounce message:
That's not exactly someone I'd expect to be having hostname issues, assuming the fault there is indeed Yahoo and not LJ.... And, given the combination of the current economic climate and their financial condition -- yeah, I immediately went to make sure yahoo.com was still live (which it is), with a bit of concern!
<[user]@yahoo.com> (expanded from <[user]@livejournal.com>): Host or
domain name not found. Name service error for name=yahoo type=A: Host not