Barring that, what recommendations might the NANOG community have for
an extremely rock-solid e-mail hosting company? I realize that may
mean self-promotion, but hey, bring it on.
Some people, when they say "email hosting company", inherently mean "hosting specifically of Microsoft Exchange email, contacts, and calendar". If that's what you're after, then I would recommend my employer's chosen hosted Exchange partner, Intermedia<http://www.intermedia.net>. They maintain server farms of Exchange clusters, and they have a very good customer portal (both at the administrator-of-the-site level and the individual end user). They also have an FTP-up-a-PST-file-and-merge-it-into-a-mailbox function that makes the initial migration from some other Exchange repository faster and more parallelizable than without it. We are extremely pleased, and we have basically stopped hosting Exchange for our own customers on our own in-house hardware, just using Intermedia as a branded service.
