Re: crash when adding IMAP folder

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On Tue, 4 Nov 2025 00:33:18 +0200 Nerijus Baliunas via Mahogany-Users <maho=
[email protected]> wrote:

NB> 2025-11-03 23:48, Nerijus Baliunas via Mahogany-Users ra=C5=A1=C4=97:
NB> > Hello,
NB> >=20
NB> > I've got a problem opening IMAP subfolders after upgrading to dovecot=
 2.4. Inbox and first level
NB> > subfolders open OK, any more nested folders give me this:
NB> >=20
NB> > 2025-11-03 23:41:57: Could not open mailbox 'IMAP Server/INBOX/Linux/=
apcupsd'.
NB> > 2025-11-03 23:41:57: The folder 'IMAP Server/INBOX/Linux/apcupsd' can=
not be opened, it only contains=20
NB> > the other folders and not the messages.
NB>=20
NB> When opening another folder I get:
NB>=20
NB> 2025-11-04 00:29:20: Mail log: [CANNOT] Character not allowed in mailbo=
x name: '.' (0.001 + 0.000 secs).
NB> 2025-11-04 00:29:20: Connection to the folder 'IMAP Server/INBOX/SPAM/m=
' lost unexpectedly.

 Is this all? I think the code tries to use '.' as separator instead of '/'
if it fails with slash, but it should have tried using slash first.

VZ

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