Changing IMAP separator - does it break things?

Filip Hajný
Wed, 14 Oct 2020 09:55:57 -0000

14. 10. 2020 v 11:51, Victor Sudakov <vas at
sibptus.ru>:
>
>> I had to do it with 10-20 live users and it went fine, nobody noticed
>> anything (I made the change in the night hours just to be sure
>> though). I had to go down and fix some erratic folder names that
>> resulted from the botched separator handling on some macOS Mail
>> accounts.
>
> Did it change anything on Dovecot disk/storage or is the IMAP separator
just
> "virtual" - ephemeral ?

Changing the separator won't fix anything that already exists. You should
see nonsense folders in the form of  '.folder\2esubfolder? there that cannot
be worked with in any way. I manually moved the contents of these to their
properly named ('.folder.subfolder?) variants - on disk.

-F