Thanks, I can send now. However, if I'm tryping a longish e-mail and it goes to save a draft, it gives an error. The sucky part of this is that god forbid there is one pico-second of latency or the AJAX code dorks up and I have to copy my whole draft and start over. So, yeah server migration bug report part deux or whatever.
So when you don't actually have a postponed-messages folder, that would probably be the cause of your problem. Creating it, so hopefully you'll be set.