Changing IMAP separator - does it break things?

[Filip Hajný]

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