It turns out that although I thought I was connected to the Net again, all outgoing email from my system was being queued until a few minutes ago, because I use a third-party SMTP provider (for which I pay a fee) rather than trusting any connection provider with my email. Rogers blocks outgoing port 25 connections, in an effort to force their customers to use their servers, presumably as an anti-spam measure. This does not please me at all, especially on top of the DNS problems already noted. A complaint has been filed. Seriously considering telling them to go fuck themselves, never mind that I just paid an installation fee I'd be unlikely to get back.