On 11 Jul 2020, at 13:50, Filip Hajný <filip@hajny.net> wrote:
I’ve created a test server and found out that the driving factor is what the namespace
separatoris set to. If set to /, Apple Mail gets confused and URL-encodes it when creating a new folder. If the separator is blank (as set by default) or set to e.g. a dot, everything works just fine.Based on example and docs I found, a slash character should be good or even recommended, suggesting this is some kind of bug in Apple Mail, but I’m not versed enough in the IMAP related RFCs to understand.
Interesting. I have always and only used '.' For the IMAP separator. I believe this was either reacquired or the default way back when with cyrus and I never changed it.
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