2.5.3: access problems with some users mailboxes

[Patrick Goetz]

A couple of months ago I upgraded to 2.5.3 and had one user who suddenly 
couldn't access several of his mail folders.  The folder names were 
displayed in the Thunderbird side panel in grey italics.  I ran these 
commands:


    # systemctl stop cyrus-master
    # su - cyrus
    # /usr/lib/cyrus/bin/reconstruct -r -f user/djones
    # <Ctrl>-d
    # systemctl start cyrus-master


Which resolved the issue.  Now a couple of months later the problem is 
inexplicably back, leading me to suspect that this might be a bug in 
2.5.3?  In any case, now when I run reconstruct I get error messages 
which I don't recall seeing previously:

   ...
   createmailbox user.djones.Archives Staff.Eleanor Smith: Mailbox 
already exists
   createmailbox user.djones.Archives Staff.Corrine Callaway.Inquiries: 
Mailbox already exists
   createmailbox user.djones.Archives Staff.Corrine 
Callaway.Destruction: Mailbox already exists
   createmailbox user.djones.Archives Staff.Corrine Callaway.SharePoint: 
Mailbox already exists
   createmailbox user.djones.Archives Staff.Corrine 
Callaway.Reorganization: Mailbox already exists
   ...


What can this possibly mean?  Of course the mailboxes already exist; I'm 
just rebuilding the indexes.

Also, I asked this question previously and don't recall getting an 
answer.  I've been using

     unixhierarchysep: yes

since version 2.4.17, yet the subscription list is still formatted using 
a "." as a separator?  What happens if there is a "." in the mailbox 
folder name?