On Thu, 22 Sep 2016, at 22:11, Eric Luyten via Info-cyrus wrote:
> On Thu, September 22, 2016 9:46 am, Michael Menge via Info-cyrus wrote:
> >
> > Quoting Paul van der Vlis via Info-cyrus <info-cyrus@lists.andrew.cmu.edu>:
> >
> >> I am wondering about the dot. So far I know I cannot use it in a mailbox
> >> name, but it is in the list.
> >>
> >
> > I suspect that your cyrus is configured to use the . as hierarchy seperator.
> > see "unixhierarchysep:" in imapd.conf manpage for details.
> Of course one can use a '.' as part of a Cyrus mailbox name, internally it
> gets translated into a '^' (arrow/caret).

In master I've changed the behaviour to expose ^ if you're not in unixhs, so 
that names are fully translatable between the two settings.  We run in a mixed 
mode at FastMail - the old imapds listening on mail.messagingengine.com (and 
our internal stuff) are still using the '.' separator for legacy reasons, but 
new clients connecting to imap.fastmail.com get both altnamespace (which is now 
robust) and '/' separators, so they can use dots nicely.

We're not yet at the point that we want to enable dots in usernames, but we're 

> I modified our GOODCHARS definition heavily when we migrated to Cyrus 2.2,
> ten years ago, and never had an issue with square brackets and such.

Yep, they seem fine.  We've had them enabled for about a year now.


  Bron Gondwana
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