courier imap - unable to access shared folders: "operation not supported"

[Mark Felder]

On Tue, 09 Jul 2013 08:23:05 -0500, R Skinner  
<rocky at herveybayaustralia.com.au> wrote:

> Ok. I'll give it a try.
>  But why would it work with the NFS server - before the repair and  
> without FAM - and not now?

Oh, I misunderstood. I thought you weren't having problems until you  
turned on that enhanced idle feature.

I'd start asking in a courier irc channel or on their mailing lists --  
this sounds quite odd.