Does Fastmail actually have multiple providers?<p>One of their mail exchangers, web site, SMTP, POP, and IMAP servers are all on the same /24, that belongs to NYI (AS11403) and according to the BGP table is not multihomed.<p>Historical DNS records from last two years also show they weren't changed.<p>I guess, "primary" is still a technically correct qualifier for the "sole" provider.