I have two email addresses that I check continuously throughout the day and I don’t think they’ve both been working at the same time for more than 5 minutes a row today.
I sent a complaint in to Dreamhost tech support and this was the answer (at 5:02 pm eastern):
Sorry for the trouble. We’re currently working on re-initializing the mail server your account uses. We plan to have it running again within a couple of hours. We are currently working on implementing a new 64-bit mail system that will avoid the problems we’ve been having with mail lately.
Judi Sohn 
2 responses to “Another Dreamhost update”
That’s an interesting answer. “64-bit mail system” is sort of weird, since more bits don’t solve problems. I’m not even sure what “64-bit mail system” means….
I have no idea, either. Maybe it has something to do with the flux capacitor? 😉