CalDAV and virtual domains not working

[Robert Norris]

It looks like the CalDAV stuff is not doing the right thing with virtual
domains (beta6 and git e415f906)

  2013-07-21T20:44:55.580301-04:00 calendar1 calendar/http[30755]: login: vpn94.mail.srv.osa [10.203.0.94] robn at fastmail.fm Basic User logged in
  2013-07-21T20:44:55.580929-04:00 calendar1 calendar/http[30755]: mlookup(user.robn at fastmail^fm.#calendars.Default) failed: Mailbox does not exist
  2013-07-21T20:44:55.581141-04:00 calendar1 calendar/http[30755]: vpn94.mail.srv.osa [10.203.0.94] as "robn at fastmail.fm" with "Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130630 Icedove/17.0.7 Lightning/1.9b1"; "PROPFIND /dav/calendars/user/robn%40fastmail.fm/Default/ HTTP/1.1" (depth=0) => "404 Not Found" (error=Mailbox does not exist)

Mailbox structure via IMAP is:

  . LIST "" *
  * LIST (\HasChildren) "." user.robn at fastmail.fm
  * LIST (\HasChildren) "." user.robn.#calendars at fastmail.fm
  * LIST (\HasNoChildren) "." user.robn.#calendars.Default at fastmail.fm
  * LIST (\HasNoChildren) "." user.robn.#calendars.Inbox at fastmail.fm
  * LIST (\HasNoChildren) "." user.robn.#calendars.Outbox at fastmail.fm

Bron tells me (if I understood him correctly) that the domain splitting
is broken, and it should be producing eg
"fastmail.fm!user.robn.#calendars.Default" instead.

Cheers,
Rob N.