Well, more generally it seems that the UTF8=ACCEPT IMAP support in SM is bugged at least for folder names handling.
If I create a folder from Thunderbird, or outlook, or emClient, the client, because of UTF8=ACCEPT now creates the folder encoded in UTF-8.
But then SmarterMail saves/create the folder encoded back in UTF-7 so the folder doesn't appear in the client after creation as it can't find it with the same encoding...
For it to appear you need to exit the client and start it again so it request a full list of the folders, and the folder is returned encoded in UTF-7.
However the RFC says...
3. "UTF8=ACCEPT" IMAP Capability and UTF-8 in IMAP Quoted-Strings
The "UTF8=ACCEPT" capability indicates that the server supports the
ability to open mailboxes containing internationalized messages with
the "SELECT" and "EXAMINE" commands, and the server can provide UTF-8
responses to the "LIST" and "LSUB" commands. This capability also
affects other IMAP extensions that can return mailbox names or their
prefixes, such as NAMESPACE [RFC2342] and ACL [RFC4314].
... which seems is not the case with SmarterMail implementation.
We really need a way to disable UTF8 support until it has been throughly tested and fixed!
Kind regards.
Sébastien Riccio
System & Network Admin
https://swisscenter.com