aq.org mail server migration

So I ended up having to speed up the mail server migration because of what might either be a failing hard drive or a garbled filesystem. (I discovered that the filesystem was corrupt and the old machine wasn't functioning properly *as* I was synchronizing data, and rather than wait and do a final synch today as I had planned, I went ahead and stayed up to finish everything overnight.) More gory details are in this post, which is mainly of interest to other people who read their mail on aq.org. But the short version is that (1) mail delivery to me (and/or from me) may be flaky today, (2) I am going to bed now.