Mail's finally coming through again pretty much instantaneously (I get mine forwarded from Google to Outlook, so it has to make an extra hop, and is still coming through in real-time, so yes folks, it seems we're baaaaaack). That only took *checks date of my last entry on this*...18 days. Someone tell me that's not an obscenely long time to be proven legitimate enough to pass on the first try?
And just for those who missed the original story and ensuing long waits, it had nothing to do with Dreamwidth. Dreamwidth simply did what was described as routine maintenance on their servers one night which included changing the MX record (I'd say "records" but according to a resource I subsequently checked, there's only one). Over the MX record change Google's system flagged the site as...this is where it gets a bit murky...a possible spammer? A hijacked website? They flagged us for or as being something and started automatically rejecting all our emails with bounce messages indicating we should resend them, so we did.
Thus began a web-wide bottleneck that caused Dreamwidth's email to clog up all the pipes on GMail, Yahoo, Hotmail, Live and Outlook, according to scattered user reports (AOL was the only email provider reportedly letting DW's email sail right through...which yes, the irony).
At one point I was so desperate for faster Dreamwidth notifications I publicly pondered switching to AOL (I never really had a quibble with AOL's email or messenger services - they both do their things, and always have, from what I can see, pretty smoothly). But I gritted my teeth, refreshed the pages involved and just waited it out. It sucks, really, that better systems can't be in place to let trusted senders just do their thing.