[Dovecot] Folder names

[James Starowitz]

Running a pretty basic setup of imap +pop3 on version 2.1.10

 

Users are able to create folders in imap that contain "&" the folder on the
backend reflects "&-" as it should, you can list folder, but then when you
relog into imap then decides it can no longer subscribe to this folder due
to invalid UTF characters. Essentially allowing users to lock themselves out
by using a very common character in a folder name.

 

Might one of the imap client compatibility plugins in imapd  cause this
quirkiness ?

 

Should I be coming at this from another direction?

 

Is this a bug?