Yeah, I did some local mail-server "tweaking" this past weekend and, uh, broke my smtp mail in process, apparently.
So while I've been getting mail just fine, mails that I've sent have quietly turned into an oblivion of lost bits. All the while, I've been cursing people for ignoring me when I send them mails.
I'm sure the opposite is true, however. So if you've sent me something expecting a reply in the past couple days, hold onto your horses as I re-send things...