Mail delivery doesn't seem to be working, or, at the very least, is considerably delayed. I just sent an e-mail to my primary Fastmail-hosted e-mail address fro

Mail delivery doesn't seem to be working, or, at the very least, is considerably delayed. I just sent an e-mail to my primary Fastmail-hosted e-mail address from my secondary GMail, and it hasn't shown up despite several minutes having passed.